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Concept visualisation of a university lecture theatre with integrated presentation and capture systems
Solution 03 / 10

AV systems integration · Dubai & the UAE

Learning & presentation spaces

Bring the lesson into focus.

Make teaching clear in the room, with options for capture and remote learning.

Discuss your projectCompare options
  • Consultation
  • Design
  • Integration
  • Support
From the brief
to a working systemSee how
it works

  • Built for teaching

    Follow the lecturer and student workflow.

  • Readable content

    Design around sightlines and small text.

  • Capture when needed

    Agree recording, access and permissions.

  • Remote learning

    Define network and software requirements.

01 · Choose a starting point

What does your team need to do?

Typical configurations, not fixed packages or completed projects. Each needs validation against your users, sources, operating conditions and site.

02 · Your selected option · EDU-01

Classroom presentation

A lecturer presents from the teaching PC or an agreed guest connection to students in the room.

Change option ↑

Reference design · project selection and tests required. Read the full design notes →

How it works · functional groups

Show the material. Make speech clear.

Teaching material

Teaching PC

Or an agreed guest connection.

Source selection

Select one presentation input.

Main display

Shared material for the room.

Room sound

Speech + content

One lecturer microphone and source audio.

Room mix

Process speech and playback separately.

Listening area

Amplifier and two starting loudspeakers.

The room panel controls sources, display power, sound level and mute. This option has no camera capture, recording or remote call.

Devices & connections Inspect here
What these groups contain Devices and connection references

Rows explain related paths. A group can include parallel outputs; the full drawing shows individual devices, directions and conditions. Repeated IDs refer to the same equipment.

Teaching material

Teaching PC

PC · Teaching PC ×1 · Includes operator monitor

Source selection

SW · Presentation switcher ×1 · 2 inputs / 1 output · Stereo audio extraction

Main display

SCREEN · Main display ×1

Connections: L01, L02.

Room sound

Speech + content

MIC · Lecturer microphone ×1

SW · Presentation switcher ×1 · 2 inputs / 1 output · Stereo audio extraction

Room mix

DSP · Audio processor ×1 · 3 analogue inputs used · Room mix: mono

Listening area

AMP · Amplifier ×1

SPK · Loudspeakers ×2 · Initial layout assumption

Connections: L03, L04, L05, L06.

Other devices, controls and supporting services

  • CTRL · Integrated panel/controller ×1
  • NOTE · REFERENCE DESIGN · PER ROOM · Solid: media. Dashed: control/status. · Room switch ×1 + installation set ×1 support these routes. · Input 2 is reserved for a guest source; no second source supplied. · No capture, conferencing or camera included.

Presentation video reaches the main display; extracted programme audio and the lecturer microphone feed the room sound system.

Signal flow

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-01 · Signal flowReference design, not an installation drawing. One PC and one lecturer microphone feed one display and room sound. Separate control routes operate source, display and audio. Quantities are per room. REFERENCE DESIGN · PER ROOM Solid: media. Dashed: control/status. Room switch ×1 + installation set ×1 support these routes. Input 2 is reserved for a guest source; no second source supplied. No capture, conferencing or camera included. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"4dcf995981708c3c5c3c03fad9f3bbc69b2fb435829a5c78d495b9cc5953f77c","view":"signal","nodes":["PC","SW","SCREEN","DSP","MIC","AMP","SPK"],"edges":["L01","L02","L03","L04","L05","L06"]}PIXEL COMMAND SOLUTIONS / EDU-01 / SIGNAL FLOWSignal flowREFERENCE DESIGN · PROJECT VALIDATION REQUIREDPC → SW: HDMIHDMISW → SCREEN: HDMIHDMISW → DSP: Analogue L/RAnalogue L/RMIC → DSP: Analogue micAnalogue micDSP → AMP: Line output 1Line output 1AMP → SPK: Speaker linesSpeaker linesTeaching PC ×1 Includes operator monitorPCTeaching PC ×1Presentation switcher ×1 2 inputs / 1 output Stereo audio extractionSWPresentation switcher×1Main display ×1SCREENMain display ×1Audio processor ×1 3 analogue inputs used Room mix: monoDSPAudio processor ×1Lecturer microphone ×1MICLecturer microphone ×1Amplifier ×1AMPAmplifier ×1Loudspeakers ×2 Initial layout assumptionSPKLoudspeakers ×2Video / LED dataAudio
Devices, connections & design conditions 6 connections
  • Teaching PC ×1; Includes operator monitor → Presentation switcher ×1; 2 inputs / 1 output; Stereo audio extraction: HDMI.
  • Presentation switcher ×1; 2 inputs / 1 output; Stereo audio extraction → Main display ×1: HDMI.
  • Presentation switcher ×1; 2 inputs / 1 output; Stereo audio extraction → Audio processor ×1; 3 analogue inputs used; Room mix: mono: Analogue L/R.
  • Lecturer microphone ×1 → Audio processor ×1; 3 analogue inputs used; Room mix: mono: Analogue mic.
  • Audio processor ×1; 3 analogue inputs used; Room mix: mono → Amplifier ×1: Line output 1.
  • Amplifier ×1 → Loudspeakers ×2; Initial layout assumption: Speaker lines.
  • Integrated panel/controller ×1 → Presentation switcher ×1; 2 inputs / 1 output; Stereo audio extraction: RS-232: source (control/status/authorisation).
  • Integrated panel/controller ×1 → Main display ×1: RS-232: power (control/status/authorisation).
  • Integrated panel/controller ×1 → Audio processor ×1; 3 analogue inputs used; Room mix: mono: IP: level / mute (control/status/authorisation).
  • Audio processor ×1; 3 analogue inputs used; Room mix: mono → Integrated panel/controller ×1: IP: actual state (control/status/authorisation).
PC
Teaching PC ×1 Includes operator monitor
SW
Presentation switcher ×1 2 inputs / 1 output Stereo audio extraction
SCREEN
Main display ×1
DSP
Audio processor ×1 3 analogue inputs used Room mix: mono
MIC
Lecturer microphone ×1
AMP
Amplifier ×1
SPK
Loudspeakers ×2 Initial layout assumption
  1. PC → SWHDMI
  2. SW → SCREENHDMI
  3. SW → DSPAnalogue L/R
  4. MIC → DSPAnalogue mic
  5. DSP → AMPLine output 1
  6. AMP → SPKSpeaker lines

REFERENCE DESIGN · PER ROOM Solid: media. Dashed: control/status. Room switch ×1 + installation set ×1 support these routes. Input 2 is reserved for a guest source; no second source supplied. No capture, conferencing or camera included.

Control & status

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-01 · Control & statusReference design, not an installation drawing. One PC and one lecturer microphone feed one display and room sound. Separate control routes operate source, display and audio. Quantities are per room. REFERENCE DESIGN · PER ROOM Solid: media. Dashed: control/status. Room switch ×1 + installation set ×1 support these routes. Input 2 is reserved for a guest source; no second source supplied. No capture, conferencing or camera included. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"4dcf995981708c3c5c3c03fad9f3bbc69b2fb435829a5c78d495b9cc5953f77c","view":"control","nodes":["SW","SCREEN","DSP","CTRL"],"edges":["L07","L08","L09","L10"]}PIXEL COMMAND SOLUTIONS / EDU-01 / CONTROL & STATUSControl & statusREFERENCE DESIGN · PROJECT VALIDATION REQUIREDCTRL → SW: RS-232: sourceRS-232: sourceCTRL → SCREEN: RS-232: powerRS-232: powerCTRL → DSP: IP: level / muteIP: level / muteDSP → CTRL: IP: actual stateIP: actual statePresentation switcher ×1 2 inputs / 1 output Stereo audio extractionSWPresentation switcher×1Main display ×1SCREENMain display ×1Audio processor ×1 3 analogue inputs used Room mix: monoDSPAudio processor ×1Integrated panel/controller ×1CTRLIntegratedpanel/controller ×1Control / status
Devices, connections & design conditions 4 connections
  • Teaching PC ×1; Includes operator monitor → Presentation switcher ×1; 2 inputs / 1 output; Stereo audio extraction: HDMI.
  • Presentation switcher ×1; 2 inputs / 1 output; Stereo audio extraction → Main display ×1: HDMI.
  • Presentation switcher ×1; 2 inputs / 1 output; Stereo audio extraction → Audio processor ×1; 3 analogue inputs used; Room mix: mono: Analogue L/R.
  • Lecturer microphone ×1 → Audio processor ×1; 3 analogue inputs used; Room mix: mono: Analogue mic.
  • Audio processor ×1; 3 analogue inputs used; Room mix: mono → Amplifier ×1: Line output 1.
  • Amplifier ×1 → Loudspeakers ×2; Initial layout assumption: Speaker lines.
  • Integrated panel/controller ×1 → Presentation switcher ×1; 2 inputs / 1 output; Stereo audio extraction: RS-232: source (control/status/authorisation).
  • Integrated panel/controller ×1 → Main display ×1: RS-232: power (control/status/authorisation).
  • Integrated panel/controller ×1 → Audio processor ×1; 3 analogue inputs used; Room mix: mono: IP: level / mute (control/status/authorisation).
  • Audio processor ×1; 3 analogue inputs used; Room mix: mono → Integrated panel/controller ×1: IP: actual state (control/status/authorisation).
SW
Presentation switcher ×1 2 inputs / 1 output Stereo audio extraction
SCREEN
Main display ×1
DSP
Audio processor ×1 3 analogue inputs used Room mix: mono
CTRL
Integrated panel/controller ×1
  1. CTRL → SWRS-232: source
  2. CTRL → SCREENRS-232: power
  3. CTRL → DSPIP: level / mute
  4. DSP → CTRLIP: actual state

REFERENCE DESIGN · PER ROOM Solid: media. Dashed: control/status. Room switch ×1 + installation set ×1 support these routes. Input 2 is reserved for a guest source; no second source supplied. No capture, conferencing or camera included.

Typical architecture · not a project drawing

Link to this drawing ↗

03 · Scope & limits

What is included. What needs agreement.

System composition

One teaching PC, one main display, one presentation switcher with audio extraction, one lecturer microphone, one audio processor, one amplifier, two loudspeakers and one integrated room panel/controller. One managed room switch and a room installation set complete the example. The PC includes its operator monitor; it is separate from the main display.

Equipment schedule · 10 groups

Example quantities, not an approved procurement schedule. Catalogue links provide component specifications; they do not confirm system compatibility or availability.

Teaching PC, including operator monitor
1

Selected with institutional IT

Main / additional AV displays
1 / 0

Display options where LED suits the design; other display types by specification

Display options →
Presentation switching / distribution
1

Switching equipment

Switching equipment →
Lecturer / question microphones
1 / 0

Microphones

Microphones →
Audio processor
1

Mixers and processors

Mixers and processors →
Amplifier / loudspeakers
1 / 2

Amplifiers · Loudspeakers

Amplifiers →Loudspeakers →
PTZ cameras / SDI-to-USB capture devices
0 / 0

Camera and capture interfaces selected together

Recorder / recording medium
0 / 0

Selected to the capture and retention brief

Integrated room panel/controller / recording indicator
1 / 0

Selected to device control interfaces

Managed room switch / installation set
1 / 1

Network, cabling, mounting and power by project

Browse equipment specifications →

What we need to demonstrate

Read real slides at agreed seats; hear speech; change source, level and mute.

Handover evidence: Display, sound and control check sheet.

Discuss this option · EDU-01

02 · Your selected option · EDU-02

Lecture capture

A lecturer records a lesson with a presenter view, presentation content and questions asked through a handheld microphone.

Change option ↑

Reference design · project selection and tests required. Read the full design notes →

How it works · functional groups

Record the presenter, material and questions

Lesson recording

Two pictures + sound

Presenter camera, slides and a dedicated microphone mix.

Recorder

Choose the layout and check actual recording state.

Review and publish

Local recording medium, then an agreed repository workflow.

Room sound

Teaching sources

Presentation plus lecturer and handheld questions.

Room mix

Separate from the recorder mix.

Room speakers

Amplified sound with its own room mix.

Recording indication follows actual recorder state. Upload does not automatically publish a course; two-way participation and translation are separate scope.

Devices & connections Inspect here
What these groups contain Devices and connection references

Rows explain related paths. A group can include parallel outputs; the full drawing shows individual devices, directions and conditions. Repeated IDs refer to the same equipment.

Lesson recording

Two pictures + sound

CAM · Presenter PTZ camera ×1 · Separate DC power

PC · Teaching PC ×1 · Includes operator monitor

SW · Presentation switcher ×1 · 2 inputs / 2 mirrored outputs · Stereo audio extraction

MIC · Microphones ×2 · Lecturer + handheld questions

DSP · Audio processor ×1 · 4 analogue inputs used · Separate room / record mixes

Recorder

REC · Recorder ×1 · HDMI + SDI + analogue audio · Embedded audio disabled

Review and publish

MEDIA · Recording medium ×1

STORE · Institutional repository ×1 service · Publication and access rules

Connections: L01, L03, L04, L09, L10, L11.

Room sound

Teaching sources

SW · Presentation switcher ×1 · 2 inputs / 2 mirrored outputs · Stereo audio extraction

MIC · Microphones ×2 · Lecturer + handheld questions

Room mix

DSP · Audio processor ×1 · 4 analogue inputs used · Separate room / record mixes

Room speakers

AMP · Amplifier ×1

SPK · Loudspeakers ×4 · Initial layout assumption

Connections: L05, L06, L07, L08.

Other devices, controls and supporting services

  • SCREEN · Main display ×1
  • CTRL · Integrated panel/controller ×1
  • LAMP · Recording indicator ×1
  • NOTE · REFERENCE DESIGN · PER ROOM · Solid: media/data. Dashed: control/status. · Room switch ×1 + installation set ×1 support IP and power. · Upload is not automatic course publication without a confirmed connector. · No remote voice/video return or automatic tracking.

Presentation and presenter video meet at the recorder. Room sound and recorded sound use separate mixes.

Video & data

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-02 · Video & dataReference design. HDMI presentation and SDI camera enter one recorder. Lecturer and question microphones plus presentation sound enter the DSP. Recording and room mixes are separate. Recorder status drives indication; an agreed upload workflow publishes to the institution's repository. REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1 support IP and power. Upload is not automatic course publication without a confirmed connector. No remote voice/video return or automatic tracking. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"f69a081cf2fc4c9cead3b5459f9d069d6cfdb2a8b0a3f2dd72e35556faa12834","view":"signal","nodes":["PC","SW","SCREEN","REC","CAM","MEDIA","STORE"],"edges":["L01","L02","L03","L04","L10","L11"]}PIXEL COMMAND SOLUTIONS / EDU-02 / VIDEO & DATAVideo & dataREFERENCE DESIGN · PROJECT VALIDATION REQUIREDPC → SW: HDMIHDMISW → SCREEN: HDMI output 1HDMI output 1SW → REC: HDMI output 2HDMI output 2CAM → REC: 3G-SDI3G-SDIREC → MEDIA: Local writeLocal writeREC → STORE: IP file upload: agreed methodIP file upload: agreedmethodTeaching PC ×1 Includes operator monitorPCTeaching PC ×1Presentation switcher ×1 2 inputs / 2 mirrored outputs Stereo audio extractionSWPresentation switcher×1Main display ×1SCREENMain display ×1Recorder ×1 HDMI + SDI + analogue audio Embedded audio disabledRECRecorder ×1Presenter PTZ camera ×1 Separate DC powerCAMPresenter PTZ camera×1Recording medium ×1MEDIARecording medium ×1Institutional repository ×1 service Publication and access rulesSTOREInstitutionalrepository ×1 serviceVideo / LED dataNetwork / data
Devices, connections & design conditions 6 connections
  • Teaching PC ×1; Includes operator monitor → Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction: HDMI.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Main display ×1: HDMI output 1.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: HDMI output 2.
  • Presenter PTZ camera ×1; Separate DC power → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: 3G-SDI.
  • Microphones ×2; Lecturer + handheld questions → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: 2 analogue inputs.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: Analogue L/R.
  • Audio processor ×1; 4 analogue inputs used; Separate room / record mixes → Amplifier ×1: Line output 1: room mix.
  • Amplifier ×1 → Loudspeakers ×4; Initial layout assumption: Speaker lines.
  • Audio processor ×1; 4 analogue inputs used; Separate room / record mixes → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: Line output 2: record mix.
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Recording medium ×1: Local write.
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Institutional repository ×1 service; Publication and access rules: IP file upload: agreed method.
  • Institutional repository ×1 service; Publication and access rules → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: Upload result / publication status (control/status/authorisation).
  • Integrated panel/controller ×1 → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: IP API: start / stop (control/status/authorisation).
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Integrated panel/controller ×1: IP API: actual recording state (control/status/authorisation).
  • Integrated panel/controller ×1 → Recording indicator ×1: GPIO: state indication (control/status/authorisation).
  • Integrated panel/controller ×1 → Presenter PTZ camera ×1; Separate DC power: IP VISCA: presets (control/status/authorisation).
  • Integrated panel/controller ×1 → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: IP: level / mute (control/status/authorisation).
  • Integrated panel/controller ×1 → Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction: RS-232: source (control/status/authorisation).
  • Integrated panel/controller ×1 → Main display ×1: RS-232: power (control/status/authorisation).
PC
Teaching PC ×1 Includes operator monitor
SW
Presentation switcher ×1 2 inputs / 2 mirrored outputs Stereo audio extraction
SCREEN
Main display ×1
REC
Recorder ×1 HDMI + SDI + analogue audio Embedded audio disabled
CAM
Presenter PTZ camera ×1 Separate DC power
MEDIA
Recording medium ×1
STORE
Institutional repository ×1 service Publication and access rules
  1. PC → SWHDMI
  2. SW → SCREENHDMI output 1
  3. SW → RECHDMI output 2
  4. CAM → REC3G-SDI
  5. REC → MEDIALocal write
  6. REC → STOREIP file upload: agreed method

REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1 support IP and power. Upload is not automatic course publication without a confirmed connector. No remote voice/video return or automatic tracking.

Audio & return paths

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-02 · Audio & return pathsReference design. HDMI presentation and SDI camera enter one recorder. Lecturer and question microphones plus presentation sound enter the DSP. Recording and room mixes are separate. Recorder status drives indication; an agreed upload workflow publishes to the institution's repository. REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1 support IP and power. Upload is not automatic course publication without a confirmed connector. No remote voice/video return or automatic tracking. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"f69a081cf2fc4c9cead3b5459f9d069d6cfdb2a8b0a3f2dd72e35556faa12834","view":"audio","nodes":["SW","REC","MIC","DSP","AMP","SPK"],"edges":["L05","L06","L07","L08","L09"]}PIXEL COMMAND SOLUTIONS / EDU-02 / AUDIO & RETURN PATHSAudio & return pathsREFERENCE DESIGN · PROJECT VALIDATION REQUIREDMIC → DSP: 2 analogue inputs2 analogue inputsSW → DSP: Analogue L/RAnalogue L/RDSP → AMP: Line output 1: room mixLine output 1: room mixAMP → SPK: Speaker linesSpeaker linesDSP → REC: Line output 2: record mixLine output 2: recordmixPresentation switcher ×1 2 inputs / 2 mirrored outputs Stereo audio extractionSWPresentation switcher×1Recorder ×1 HDMI + SDI + analogue audio Embedded audio disabledRECRecorder ×1Microphones ×2 Lecturer + handheld questionsMICMicrophones ×2Audio processor ×1 4 analogue inputs used Separate room / record mixesDSPAudio processor ×1Amplifier ×1AMPAmplifier ×1Loudspeakers ×4 Initial layout assumptionSPKLoudspeakers ×4Audio
Devices, connections & design conditions 5 connections
  • Teaching PC ×1; Includes operator monitor → Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction: HDMI.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Main display ×1: HDMI output 1.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: HDMI output 2.
  • Presenter PTZ camera ×1; Separate DC power → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: 3G-SDI.
  • Microphones ×2; Lecturer + handheld questions → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: 2 analogue inputs.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: Analogue L/R.
  • Audio processor ×1; 4 analogue inputs used; Separate room / record mixes → Amplifier ×1: Line output 1: room mix.
  • Amplifier ×1 → Loudspeakers ×4; Initial layout assumption: Speaker lines.
  • Audio processor ×1; 4 analogue inputs used; Separate room / record mixes → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: Line output 2: record mix.
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Recording medium ×1: Local write.
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Institutional repository ×1 service; Publication and access rules: IP file upload: agreed method.
  • Institutional repository ×1 service; Publication and access rules → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: Upload result / publication status (control/status/authorisation).
  • Integrated panel/controller ×1 → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: IP API: start / stop (control/status/authorisation).
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Integrated panel/controller ×1: IP API: actual recording state (control/status/authorisation).
  • Integrated panel/controller ×1 → Recording indicator ×1: GPIO: state indication (control/status/authorisation).
  • Integrated panel/controller ×1 → Presenter PTZ camera ×1; Separate DC power: IP VISCA: presets (control/status/authorisation).
  • Integrated panel/controller ×1 → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: IP: level / mute (control/status/authorisation).
  • Integrated panel/controller ×1 → Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction: RS-232: source (control/status/authorisation).
  • Integrated panel/controller ×1 → Main display ×1: RS-232: power (control/status/authorisation).
SW
Presentation switcher ×1 2 inputs / 2 mirrored outputs Stereo audio extraction
REC
Recorder ×1 HDMI + SDI + analogue audio Embedded audio disabled
MIC
Microphones ×2 Lecturer + handheld questions
DSP
Audio processor ×1 4 analogue inputs used Separate room / record mixes
AMP
Amplifier ×1
SPK
Loudspeakers ×4 Initial layout assumption
  1. MIC → DSP2 analogue inputs
  2. SW → DSPAnalogue L/R
  3. DSP → AMPLine output 1: room mix
  4. AMP → SPKSpeaker lines
  5. DSP → RECLine output 2: record mix

REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1 support IP and power. Upload is not automatic course publication without a confirmed connector. No remote voice/video return or automatic tracking.

Control & status

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-02 · Control & statusReference design. HDMI presentation and SDI camera enter one recorder. Lecturer and question microphones plus presentation sound enter the DSP. Recording and room mixes are separate. Recorder status drives indication; an agreed upload workflow publishes to the institution's repository. REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1 support IP and power. Upload is not automatic course publication without a confirmed connector. No remote voice/video return or automatic tracking. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"f69a081cf2fc4c9cead3b5459f9d069d6cfdb2a8b0a3f2dd72e35556faa12834","view":"control","nodes":["SW","SCREEN","REC","CAM","DSP","STORE","CTRL","LAMP"],"edges":["L12","L13","L14","L15","L16","L17","L18","L19"]}PIXEL COMMAND SOLUTIONS / EDU-02 / CONTROL & STATUSControl & statusREFERENCE DESIGN · PROJECT VALIDATION REQUIREDSTORE → REC: Upload result / publication statusUpload result /publication statusCTRL → REC: IP API: start / stopIP API: start / stopREC → CTRL: IP API: actual recording stateIP API: actualrecording stateCTRL → LAMP: GPIO: state indicationGPIO: state indicationCTRL → CAM: IP VISCA: presetsIP VISCA: presetsCTRL → DSP: IP: level / muteIP: level / muteCTRL → SW: RS-232: sourceRS-232: sourceCTRL → SCREEN: RS-232: powerRS-232: powerPresentation switcher ×1 2 inputs / 2 mirrored outputs Stereo audio extractionSWPresentation switcher×1Main display ×1SCREENMain display ×1Recorder ×1 HDMI + SDI + analogue audio Embedded audio disabledRECRecorder ×1Presenter PTZ camera ×1 Separate DC powerCAMPresenter PTZ camera×1Audio processor ×1 4 analogue inputs used Separate room / record mixesDSPAudio processor ×1Institutional repository ×1 service Publication and access rulesSTOREInstitutionalrepository ×1 serviceIntegrated panel/controller ×1CTRLIntegratedpanel/controller ×1Recording indicator ×1LAMPRecording indicator ×1Control / status
Devices, connections & design conditions 8 connections
  • Teaching PC ×1; Includes operator monitor → Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction: HDMI.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Main display ×1: HDMI output 1.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: HDMI output 2.
  • Presenter PTZ camera ×1; Separate DC power → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: 3G-SDI.
  • Microphones ×2; Lecturer + handheld questions → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: 2 analogue inputs.
  • Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: Analogue L/R.
  • Audio processor ×1; 4 analogue inputs used; Separate room / record mixes → Amplifier ×1: Line output 1: room mix.
  • Amplifier ×1 → Loudspeakers ×4; Initial layout assumption: Speaker lines.
  • Audio processor ×1; 4 analogue inputs used; Separate room / record mixes → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: Line output 2: record mix.
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Recording medium ×1: Local write.
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Institutional repository ×1 service; Publication and access rules: IP file upload: agreed method.
  • Institutional repository ×1 service; Publication and access rules → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: Upload result / publication status (control/status/authorisation).
  • Integrated panel/controller ×1 → Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled: IP API: start / stop (control/status/authorisation).
  • Recorder ×1; HDMI + SDI + analogue audio; Embedded audio disabled → Integrated panel/controller ×1: IP API: actual recording state (control/status/authorisation).
  • Integrated panel/controller ×1 → Recording indicator ×1: GPIO: state indication (control/status/authorisation).
  • Integrated panel/controller ×1 → Presenter PTZ camera ×1; Separate DC power: IP VISCA: presets (control/status/authorisation).
  • Integrated panel/controller ×1 → Audio processor ×1; 4 analogue inputs used; Separate room / record mixes: IP: level / mute (control/status/authorisation).
  • Integrated panel/controller ×1 → Presentation switcher ×1; 2 inputs / 2 mirrored outputs; Stereo audio extraction: RS-232: source (control/status/authorisation).
  • Integrated panel/controller ×1 → Main display ×1: RS-232: power (control/status/authorisation).
SW
Presentation switcher ×1 2 inputs / 2 mirrored outputs Stereo audio extraction
SCREEN
Main display ×1
REC
Recorder ×1 HDMI + SDI + analogue audio Embedded audio disabled
CAM
Presenter PTZ camera ×1 Separate DC power
DSP
Audio processor ×1 4 analogue inputs used Separate room / record mixes
STORE
Institutional repository ×1 service Publication and access rules
CTRL
Integrated panel/controller ×1
LAMP
Recording indicator ×1
  1. STORE → RECUpload result / publication status
  2. CTRL → RECIP API: start / stop
  3. REC → CTRLIP API: actual recording state
  4. CTRL → LAMPGPIO: state indication
  5. CTRL → CAMIP VISCA: presets
  6. CTRL → DSPIP: level / mute
  7. CTRL → SWRS-232: source
  8. CTRL → SCREENRS-232: power

REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1 support IP and power. Upload is not automatic course publication without a confirmed connector. No remote voice/video return or automatic tracking.

Typical architecture · not a project drawing

Link to this drawing ↗

03 · Scope & limits

What is included. What needs agreement.

System composition

One teaching PC, one main display, one presentation switcher with two mirrored outputs and audio extraction, two microphones, one audio processor, one amplifier and four loudspeakers as a starting layout. One PTZ camera feeds the recorder over SDI; the presentation feeds it over HDMI. One recording appliance, one recording medium, one room panel/controller, one recording indicator and one managed room switch support the workflow. The institution supplies the agreed repository service.

Equipment schedule · 10 groups

Example quantities, not an approved procurement schedule. Catalogue links provide component specifications; they do not confirm system compatibility or availability.

Teaching PC, including operator monitor
1

Selected with institutional IT

Main / additional AV displays
1 / 0

Display options where LED suits the design; other display types by specification

Display options →
Presentation switching / distribution
1

Switching equipment

Switching equipment →
Lecturer / question microphones
1 / 1

Microphones

Microphones →
Audio processor
1

Mixers and processors

Mixers and processors →
Amplifier / loudspeakers
1 / 4

Amplifiers · Loudspeakers

Amplifiers →Loudspeakers →
PTZ cameras / SDI-to-USB capture devices
1 / 0

Camera and capture interfaces selected together

Recorder / recording medium
1 / 1

Selected to the capture and retention brief

Integrated room panel/controller / recording indicator
1 / 1

Selected to device control interfaces

Managed room switch / installation set
1 / 1

Network, cabling, mounting and power by project

Browse equipment specifications →

What we need to demonstrate

Record a full lesson with presenter, material and spoken questions; replay and publish to the right audience.

Handover evidence: Recording sample, upload/access results and storage settings.

Discuss this option · EDU-02

02 · Your selected option · EDU-03

Two-way hybrid teaching

Students in the room and online ask questions, hear answers and share the same teaching material.

Change option ↑

Reference design · project selection and tests required. Read the full design notes →

How it works · functional groups

A two-way class with separate call and room sound

To remote students

Room contributions

Three microphone channels; two selectable camera views.

Teaching / call PC

AEC speech arrives by USB; the application shares content.

Remote class

One tested camera-selection and sharing workflow.

Return to the room

Remote return

Call sound and programme playback from the PC.

Room + recording mixes

Return supplies the AEC reference, never the call send.

Listen and record

Room speakers and a separate lesson recording mix.

Audience microphones feed the call and recording. Local audience voice lift requires separate acoustic design. The main and participant displays have separate PC outputs.

Devices & connections Inspect here
What these groups contain Devices and connection references

Rows explain related paths. A group can include parallel outputs; the full drawing shows individual devices, directions and conditions. Repeated IDs refer to the same equipment.

To remote students

Room contributions

MICS · Microphone channels ×3 · Lecturer + 2 audience zones

CAM · PTZ cameras ×2 · Presenter / audience · Separate DC power

CAP · SDI-to-USB capture ×2

Teaching / call PC

DSP · AEC audio processor ×1 · AEC on microphone inputs · Reference: far end + programme

PC · Teaching / conferencing PC ×1 · Operator monitor included · Camera selection + content sharing

Remote class

REMOTE · Remote participants · Institutional conferencing service

Connections: L01, L02, L03, L04, L05.

Return to the room

Remote return

PC · Teaching / conferencing PC ×1 · Operator monitor included · Camera selection + content sharing

Room + recording mixes

DSP · AEC audio processor ×1 · AEC on microphone inputs · Reference: far end + programme

Listen and record

AMP · Amplifier ×1

SPK · Loudspeakers ×4

REC · Recorder ×1 · Embedded HDMI audio disabled

MEDIA · Recording medium ×1

Connections: L06, L07, L08, L11, L13, L14.

Other devices, controls and supporting services

  • DA · HDMI DA ×1 · 1 input / 2 outputs
  • SCREEN · Main display ×1
  • SCREEN2 · Remote-participant display ×1
  • REPO · Institutional repository ×1 service
  • CTRL · Integrated panel/controller ×1
  • LAMP · Recording indicator ×1
  • NOTE · REFERENCE DESIGN · PER ROOM · Solid: media/data. Dashed: control/status. · Room switch ×1 + installation set ×1; capture and audio share PC USB resources. · Room mix excludes audience-zone voice lift unless separately designed. · Return audio is excluded from USB send; content audio is shared by the application. · Two selectable cameras do not guarantee simultaneous delivery of both views.

Two camera captures feed the conferencing PC. Remote sound returns to the room and recording, with a separate outgoing microphone mix.

Video & data

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-03 · Video & dataReference design. Two SDI cameras use two USB capture devices. The conferencing PC sends and receives remote media. Microphone send excludes remote return; the DSP uses playback as the AEC reference. Room and recording mixes are distinct. One HDMI programme is recorded, not all camera sources separately. REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1; capture and audio share PC USB resources. Room mix excludes audience-zone voice lift unless separately designed. Return audio is excluded from USB send; content audio is shared by the application. Two selectable cameras do not guarantee simultaneous delivery of both views. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"aff991b6b65b9a1c764db780b246d6a44bd5fcc7f8b11308a4879c48d114c95a","view":"signal","nodes":["CAM","CAP","PC","REMOTE","DA","SCREEN","SCREEN2","REC","MEDIA","REPO"],"edges":["L01","L02","L03","L09","L10","L11","L12","L14","L15"]}PIXEL COMMAND SOLUTIONS / EDU-03 / VIDEO & DATAVideo & dataREFERENCE DESIGN · PROJECT VALIDATION REQUIREDCAM → CAP: 2 SDI routes2 × SDICAP → PC: 2 USB video inputs2 × USB videoPC ↔ REMOTE: IP: two-way call + shared contentTwo-way IP callPC → DA: AV output A: HDMI programmeOutput A · HDMIDA → SCREEN: HDMIHDMIPC → SCREEN2: AV output B: HDMI / DPOutput B · HDMI / DPDA → REC: HDMI: programme videoHDMI programmeREC → MEDIA: Local writeLocal writeREC → REPO: IP: agreed upload workflowAgreed IP uploadPTZ cameras ×2 Presenter / audience Separate DC powerCAMPTZ cameras ×2SDI-to-USB capture ×2CAPSDI-to-USB capture ×2Teaching / conferencing PC ×1 Operator monitor included Camera selection + content sharingPCTeaching /conferencing PC ×1Remote participants Institutional conferencing serviceREMOTERemote participantsHDMI DA ×1 1 input / 2 outputsDAHDMI DA ×1Main display ×1SCREENMain display ×1Remote-participant display ×1SCREEN2Remote-participantdisplay ×1Recorder ×1 Embedded HDMI audio disabledRECRecorder ×1Recording medium ×1MEDIARecording medium ×1Institutional repository ×1 serviceREPOInstitutionalrepository ×1 serviceVideo / LED dataUSB / KVMNetwork / data
Devices, connections & design conditions 9 connections
  • PTZ cameras ×2; Presenter / audience; Separate DC power → SDI-to-USB capture ×2: 2 SDI routes.
  • SDI-to-USB capture ×2 → Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing: 2 USB video inputs.
  • Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing ↔ Remote participants; Institutional conferencing service: IP: two-way call + shared content.
  • Microphone channels ×3; Lecturer + 2 audience zones → AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme: 3 analogue mic inputs.
  • AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme → Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing: USB send: mic mix only.
  • Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing → AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme: USB receive: far end + programme.
  • AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme → Amplifier ×1: Line 1: room mix.
  • Amplifier ×1 → Loudspeakers ×4: Speaker lines.
  • Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing → HDMI DA ×1; 1 input / 2 outputs: AV output A: HDMI programme.
  • HDMI DA ×1; 1 input / 2 outputs → Main display ×1: HDMI.
  • Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing → Remote-participant display ×1: AV output B: HDMI / DP.
  • HDMI DA ×1; 1 input / 2 outputs → Recorder ×1; Embedded HDMI audio disabled: HDMI: programme video.
  • AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme → Recorder ×1; Embedded HDMI audio disabled: Line 2: microphones + far end + programme.
  • Recorder ×1; Embedded HDMI audio disabled → Recording medium ×1: Local write.
  • Recorder ×1; Embedded HDMI audio disabled → Institutional repository ×1 service: IP: agreed upload workflow.
  • Integrated panel/controller ×1 → PTZ cameras ×2; Presenter / audience; Separate DC power: IP VISCA: presets (control/status/authorisation).
  • Integrated panel/controller ×1 → AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme: IP: level / mute (control/status/authorisation).
  • Integrated panel/controller ×1 → Recorder ×1; Embedded HDMI audio disabled: IP API: record start / stop (control/status/authorisation).
  • Recorder ×1; Embedded HDMI audio disabled → Integrated panel/controller ×1: IP API: recording state (control/status/authorisation).
  • Integrated panel/controller ×1 → Recording indicator ×1: GPIO: actual state (control/status/authorisation).
  • Integrated panel/controller ×1 → Main display ×1: Serial: display power (control/status/authorisation).
  • Integrated panel/controller ×1 → Remote-participant display ×1: Serial: display power (control/status/authorisation).
CAM
PTZ cameras ×2 Presenter / audience Separate DC power
CAP
SDI-to-USB capture ×2
PC
Teaching / conferencing PC ×1 Operator monitor included Camera selection + content sharing
REMOTE
Remote participants Institutional conferencing service
DA
HDMI DA ×1 1 input / 2 outputs
SCREEN
Main display ×1
SCREEN2
Remote-participant display ×1
REC
Recorder ×1 Embedded HDMI audio disabled
MEDIA
Recording medium ×1
REPO
Institutional repository ×1 service
  1. CAM → CAP2 SDI routes
  2. CAP → PC2 USB video inputs
  3. PC ↔ REMOTEIP: two-way call + shared content
  4. PC → DAAV output A: HDMI programme
  5. DA → SCREENHDMI
  6. PC → SCREEN2AV output B: HDMI / DP
  7. DA → RECHDMI: programme video
  8. REC → MEDIALocal write
  9. REC → REPOIP: agreed upload workflow

REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1; capture and audio share PC USB resources. Room mix excludes audience-zone voice lift unless separately designed. Return audio is excluded from USB send; content audio is shared by the application. Two selectable cameras do not guarantee simultaneous delivery of both views.

Audio & return paths

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-03 · Audio & return pathsReference design. Two SDI cameras use two USB capture devices. The conferencing PC sends and receives remote media. Microphone send excludes remote return; the DSP uses playback as the AEC reference. Room and recording mixes are distinct. One HDMI programme is recorded, not all camera sources separately. REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1; capture and audio share PC USB resources. Room mix excludes audience-zone voice lift unless separately designed. Return audio is excluded from USB send; content audio is shared by the application. Two selectable cameras do not guarantee simultaneous delivery of both views. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"aff991b6b65b9a1c764db780b246d6a44bd5fcc7f8b11308a4879c48d114c95a","view":"audio","nodes":["PC","MICS","DSP","AMP","SPK","REC"],"edges":["L04","L05","L06","L07","L08","L13"]}PIXEL COMMAND SOLUTIONS / EDU-03 / AUDIO & RETURN PATHSAudio & return pathsREFERENCE DESIGN · PROJECT VALIDATION REQUIREDMICS → DSP: 3 analogue mic inputs3 analogue mic inputsDSP → PC: USB send: mic mix onlyUSB send: mic mix onlyPC → DSP: USB receive: far end + programmeUSB receive: far end +programmeDSP → AMP: Line 1: room mixLine 1: room mixAMP → SPK: Speaker linesSpeaker linesDSP → REC: Line 2: microphones + far end + programmeLine 2: microphones +far end + programmeTeaching / conferencing PC ×1 Operator monitor included Camera selection + content sharingPCTeaching /conferencing PC ×1Microphone channels ×3 Lecturer + 2 audience zonesMICSMicrophone channels ×3AEC audio processor ×1 AEC on microphone inputs Reference: far end + programmeDSPAEC audio processor ×1Amplifier ×1AMPAmplifier ×1Loudspeakers ×4SPKLoudspeakers ×4Recorder ×1 Embedded HDMI audio disabledRECRecorder ×1AudioUSB / KVM
Devices, connections & design conditions 6 connections
  • PTZ cameras ×2; Presenter / audience; Separate DC power → SDI-to-USB capture ×2: 2 SDI routes.
  • SDI-to-USB capture ×2 → Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing: 2 USB video inputs.
  • Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing ↔ Remote participants; Institutional conferencing service: IP: two-way call + shared content.
  • Microphone channels ×3; Lecturer + 2 audience zones → AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme: 3 analogue mic inputs.
  • AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme → Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing: USB send: mic mix only.
  • Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing → AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme: USB receive: far end + programme.
  • AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme → Amplifier ×1: Line 1: room mix.
  • Amplifier ×1 → Loudspeakers ×4: Speaker lines.
  • Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing → HDMI DA ×1; 1 input / 2 outputs: AV output A: HDMI programme.
  • HDMI DA ×1; 1 input / 2 outputs → Main display ×1: HDMI.
  • Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing → Remote-participant display ×1: AV output B: HDMI / DP.
  • HDMI DA ×1; 1 input / 2 outputs → Recorder ×1; Embedded HDMI audio disabled: HDMI: programme video.
  • AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme → Recorder ×1; Embedded HDMI audio disabled: Line 2: microphones + far end + programme.
  • Recorder ×1; Embedded HDMI audio disabled → Recording medium ×1: Local write.
  • Recorder ×1; Embedded HDMI audio disabled → Institutional repository ×1 service: IP: agreed upload workflow.
  • Integrated panel/controller ×1 → PTZ cameras ×2; Presenter / audience; Separate DC power: IP VISCA: presets (control/status/authorisation).
  • Integrated panel/controller ×1 → AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme: IP: level / mute (control/status/authorisation).
  • Integrated panel/controller ×1 → Recorder ×1; Embedded HDMI audio disabled: IP API: record start / stop (control/status/authorisation).
  • Recorder ×1; Embedded HDMI audio disabled → Integrated panel/controller ×1: IP API: recording state (control/status/authorisation).
  • Integrated panel/controller ×1 → Recording indicator ×1: GPIO: actual state (control/status/authorisation).
  • Integrated panel/controller ×1 → Main display ×1: Serial: display power (control/status/authorisation).
  • Integrated panel/controller ×1 → Remote-participant display ×1: Serial: display power (control/status/authorisation).
PC
Teaching / conferencing PC ×1 Operator monitor included Camera selection + content sharing
MICS
Microphone channels ×3 Lecturer + 2 audience zones
DSP
AEC audio processor ×1 AEC on microphone inputs Reference: far end + programme
AMP
Amplifier ×1
SPK
Loudspeakers ×4
REC
Recorder ×1 Embedded HDMI audio disabled
  1. MICS → DSP3 analogue mic inputs
  2. DSP → PCUSB send: mic mix only
  3. PC → DSPUSB receive: far end + programme
  4. DSP → AMPLine 1: room mix
  5. AMP → SPKSpeaker lines
  6. DSP → RECLine 2: microphones + far end + programme

REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1; capture and audio share PC USB resources. Room mix excludes audience-zone voice lift unless separately designed. Return audio is excluded from USB send; content audio is shared by the application. Two selectable cameras do not guarantee simultaneous delivery of both views.

Control & status

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-03 · Control & statusReference design. Two SDI cameras use two USB capture devices. The conferencing PC sends and receives remote media. Microphone send excludes remote return; the DSP uses playback as the AEC reference. Room and recording mixes are distinct. One HDMI programme is recorded, not all camera sources separately. REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1; capture and audio share PC USB resources. Room mix excludes audience-zone voice lift unless separately designed. Return audio is excluded from USB send; content audio is shared by the application. Two selectable cameras do not guarantee simultaneous delivery of both views. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"aff991b6b65b9a1c764db780b246d6a44bd5fcc7f8b11308a4879c48d114c95a","view":"control","nodes":["CAM","DSP","SCREEN","SCREEN2","REC","CTRL","LAMP"],"edges":["L16","L17","L18","L19","L20","L21","L22"]}PIXEL COMMAND SOLUTIONS / EDU-03 / CONTROL & STATUSControl & statusREFERENCE DESIGN · PROJECT VALIDATION REQUIREDCTRL → CAM: IP VISCA: presetsIP VISCA: presetsCTRL → DSP: IP: level / muteIP: level / muteCTRL → REC: IP API: record start / stopIP API: record start /stopREC → CTRL: IP API: recording stateIP API: recording stateCTRL → LAMP: GPIO: actual stateGPIO: actual stateCTRL → SCREEN: Serial: display powerSerial: display powerCTRL → SCREEN2: Serial: display powerSerial: display powerPTZ cameras ×2 Presenter / audience Separate DC powerCAMPTZ cameras ×2AEC audio processor ×1 AEC on microphone inputs Reference: far end + programmeDSPAEC audio processor ×1Main display ×1SCREENMain display ×1Remote-participant display ×1SCREEN2Remote-participantdisplay ×1Recorder ×1 Embedded HDMI audio disabledRECRecorder ×1Integrated panel/controller ×1CTRLIntegratedpanel/controller ×1Recording indicator ×1LAMPRecording indicator ×1Control / status
Devices, connections & design conditions 7 connections
  • PTZ cameras ×2; Presenter / audience; Separate DC power → SDI-to-USB capture ×2: 2 SDI routes.
  • SDI-to-USB capture ×2 → Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing: 2 USB video inputs.
  • Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing ↔ Remote participants; Institutional conferencing service: IP: two-way call + shared content.
  • Microphone channels ×3; Lecturer + 2 audience zones → AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme: 3 analogue mic inputs.
  • AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme → Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing: USB send: mic mix only.
  • Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing → AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme: USB receive: far end + programme.
  • AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme → Amplifier ×1: Line 1: room mix.
  • Amplifier ×1 → Loudspeakers ×4: Speaker lines.
  • Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing → HDMI DA ×1; 1 input / 2 outputs: AV output A: HDMI programme.
  • HDMI DA ×1; 1 input / 2 outputs → Main display ×1: HDMI.
  • Teaching / conferencing PC ×1; Operator monitor included; Camera selection + content sharing → Remote-participant display ×1: AV output B: HDMI / DP.
  • HDMI DA ×1; 1 input / 2 outputs → Recorder ×1; Embedded HDMI audio disabled: HDMI: programme video.
  • AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme → Recorder ×1; Embedded HDMI audio disabled: Line 2: microphones + far end + programme.
  • Recorder ×1; Embedded HDMI audio disabled → Recording medium ×1: Local write.
  • Recorder ×1; Embedded HDMI audio disabled → Institutional repository ×1 service: IP: agreed upload workflow.
  • Integrated panel/controller ×1 → PTZ cameras ×2; Presenter / audience; Separate DC power: IP VISCA: presets (control/status/authorisation).
  • Integrated panel/controller ×1 → AEC audio processor ×1; AEC on microphone inputs; Reference: far end + programme: IP: level / mute (control/status/authorisation).
  • Integrated panel/controller ×1 → Recorder ×1; Embedded HDMI audio disabled: IP API: record start / stop (control/status/authorisation).
  • Recorder ×1; Embedded HDMI audio disabled → Integrated panel/controller ×1: IP API: recording state (control/status/authorisation).
  • Integrated panel/controller ×1 → Recording indicator ×1: GPIO: actual state (control/status/authorisation).
  • Integrated panel/controller ×1 → Main display ×1: Serial: display power (control/status/authorisation).
  • Integrated panel/controller ×1 → Remote-participant display ×1: Serial: display power (control/status/authorisation).
CAM
PTZ cameras ×2 Presenter / audience Separate DC power
DSP
AEC audio processor ×1 AEC on microphone inputs Reference: far end + programme
SCREEN
Main display ×1
SCREEN2
Remote-participant display ×1
REC
Recorder ×1 Embedded HDMI audio disabled
CTRL
Integrated panel/controller ×1
LAMP
Recording indicator ×1
  1. CTRL → CAMIP VISCA: presets
  2. CTRL → DSPIP: level / mute
  3. CTRL → RECIP API: record start / stop
  4. REC → CTRLIP API: recording state
  5. CTRL → LAMPGPIO: actual state
  6. CTRL → SCREENSerial: display power
  7. CTRL → SCREEN2Serial: display power

REFERENCE DESIGN · PER ROOM Solid: media/data. Dashed: control/status. Room switch ×1 + installation set ×1; capture and audio share PC USB resources. Room mix excludes audience-zone voice lift unless separately designed. Return audio is excluded from USB send; content audio is shared by the application. Two selectable cameras do not guarantee simultaneous delivery of both views.

Typical architecture · not a project drawing

Link to this drawing ↗

03 · Scope & limits

What is included. What needs agreement.

System composition

One teaching/conferencing PC, a main display and a remote-participant display, one lecturer microphone and two audience microphone zones. One echo-cancelling audio processor provides distinct call, room and recording mixes. Two PTZ cameras use two SDI-to-USB capture devices. One amplifier and four loudspeakers form the initial room layout. A programme output split feeds the main display and one recording appliance with one recording medium. One integrated panel/controller, one recording indicator, one managed room switch, conferencing software and an agreed repository complete the example.

Equipment schedule · 10 groups

Example quantities, not an approved procurement schedule. Catalogue links provide component specifications; they do not confirm system compatibility or availability.

Teaching PC, including operator monitor
1

Selected with institutional IT

Main / additional AV displays
1 / 1 remote

Display options where LED suits the design; other display types by specification

Display options →
Presentation switching / distribution
1 programme splitter

Switching equipment

Switching equipment →
Lecturer / question microphones
1 / 2 zones

Microphones

Microphones →
Audio processor
1 with AEC and USB audio

Mixers and processors

Mixers and processors →
Amplifier / loudspeakers
1 / 4

Amplifiers · Loudspeakers

Amplifiers →Loudspeakers →
PTZ cameras / SDI-to-USB capture devices
2 / 2

Camera and capture interfaces selected together

Recorder / recording medium
1 / 1

Selected to the capture and retention brief

Integrated room panel/controller / recording indicator
1 / 1

Selected to device control interfaces

Managed room switch / installation set
1 / 1

Network, cabling, mounting and power by project

Browse equipment specifications →

What we need to demonstrate

Ask and answer from room microphone zones and a remote endpoint; share content, switch camera view and review the recording.

Handover evidence: Call and recording results, including return-audio checks.

Discuss this option · EDU-03

02 · Your selected option · EDU-04

Hybrid learning, translation & archive

The lecturer teaches in a room through a separate application. Students view the presenter and presentation in a browser, choose language tracks, submit written questions and revisit permitted recordings.

Change option ↑

Proposed system · software status and performance unverified. Read the full design notes →

How it works · functional groups

One teaching room · a proposed lecturer workflow

Capture and send

Presenter + material

Camera capture, PC desktop and original Russian speech.

Lecturer application

Preview two videos, check sound, then start the lesson.

Shared local platform

Room LAN carries the agreed media ingest. Protocol unconfirmed.

Room sound

Teaching PC

Programme playback; material and captions use separate display outputs.

Audio interface

Playback also supplies its echo-cancellation reference.

Room speakers

Two loudspeakers as the starting layout.

Captions, questions and status return from the platform to the lecturer application. No student voice/video return, automatic tracking or room TTS playback is included.

Devices & connections Inspect here
What these groups contain Devices and connection references

Rows explain related paths. A group can include parallel outputs; the full drawing shows individual devices, directions and conditions. Repeated IDs refer to the same equipment.

Capture and send

Presenter + material

CAM · PTZ camera ×1 · Separate DC power

CAP · SDI-to-USB capture ×1

DESKTOP · Desktop / presentation · Software source on the same PC

MIC · Lecturer microphone ×1

DSP · USB audio processor ×1 · Speech-only capture mix · Playback is AEC reference

Lecturer application

PC · Teaching PC ×1 · Separate lecturer application ×1 · Operator monitor included

Shared local platform

NET · Managed room switch ×1 · Media and control routes

PLATFORM · Shared local platform · See EDU-04-system · Counted once for all rooms

Connections: L01, L02, L03, L04, L05, L11, L12.

Room sound

Teaching PC

PC · Teaching PC ×1 · Separate lecturer application ×1 · Operator monitor included

Audio interface

DSP · USB audio processor ×1 · Speech-only capture mix · Playback is AEC reference

Room speakers

AMP · Amplifier ×1

SPK · Loudspeakers ×2

Connections: L06, L07, L08.

Other devices, controls and supporting services

  • MAIN · Main display ×1 · Teaching material
  • SUBS · Caption display ×1 · RU / EN / ZH · No administrative UI
  • EXT · OPTION: guest laptop ×1 · HDMI capture ×1
  • NOTE · PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED · Solid: media/data. Dashed: control/status. · Installation set ×1 per room includes cabling, mounts and power. · No automatic PTZ tracking; no remote student voice/video return. · TTS playback into room speakers is outside the baseline. · API/media protocol compatibility still requires developer confirmation.

The lecturer application captures camera, presentation and original speech, controls camera presets and receives captions and written questions.

Video & data

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-04-room · Video & dataProposed design with unconfirmed software status. One PTZ camera feeds SDI capture, while desktop capture provides the second video. The lecturer application sends both videos and original Russian speech to the shared local platform. Captions, questions and status return separately. The room has one main display and one caption display, separate from the PC operator monitor. PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED Solid: media/data. Dashed: control/status. Installation set ×1 per room includes cabling, mounts and power. No automatic PTZ tracking; no remote student voice/video return. TTS playback into room speakers is outside the baseline. API/media protocol compatibility still requires developer confirmation. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"9523e8dd7af17f955c88fb65e948fee2040d2562636b78ce3998bbcefc53d995","view":"signal","nodes":["CAM","CAP","PC","DESKTOP","MAIN","SUBS","NET","PLATFORM","EXT"],"edges":["L01","L02","L03","L09","L10","L11","L12","L16"]}PIXEL COMMAND SOLUTIONS / EDU-04-room / VIDEO & DATAVideo & dataPROPOSED · SOFTWARE / PERFORMANCE UNVERIFIEDCAM → CAP: 3G-SDI3G-SDICAP → PC: USB video: channel 1USB video: channel 1DESKTOP → PC: Internal capture: channel 2Internal capture:channel 2PC → MAIN: AV output A: HDMI / DPAV output A: HDMI / DPPC → SUBS: AV output B: HDMI / DPAV output B: HDMI / DPPC → NET: Ethernet: 2 video + RU audioEthernet: 2 video + RUaudioNET → PLATFORM: Uplink: IP media, protocol TBDUplink: IP media,protocol TBDEXT → PC: USB: replaces desktop channel 2USB: replaces desktopchannel 2PTZ camera ×1 Separate DC powerCAMPTZ camera ×1SDI-to-USB capture ×1CAPSDI-to-USB capture ×1Teaching PC ×1 Separate lecturer application ×1 Operator monitor includedPCTeaching PC ×1Desktop / presentation Software source on the same PCDESKTOPDesktop / presentationMain display ×1 Teaching materialMAINMain display ×1Caption display ×1 RU / EN / ZH No administrative UISUBSCaption display ×1Managed room switch ×1 Media and control routesNETManaged room switch ×1Shared local platform See EDU-04-system Counted once for all roomsPLATFORMShared local platformOPTION: guest laptop ×1 HDMI capture ×1EXTOPTION: guest laptop×1Video / LED dataUSB / KVMNetwork / data
Devices, connections & design conditions 8 connections
  • PTZ camera ×1; Separate DC power → SDI-to-USB capture ×1: 3G-SDI.
  • SDI-to-USB capture ×1 → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: USB video: channel 1.
  • Desktop / presentation; Software source on the same PC → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: Internal capture: channel 2.
  • Lecturer microphone ×1 → USB audio processor ×1; Speech-only capture mix; Playback is AEC reference: Analogue mic.
  • USB audio processor ×1; Speech-only capture mix; Playback is AEC reference → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: USB send: original RU speech.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → USB audio processor ×1; Speech-only capture mix; Playback is AEC reference: USB receive: programme playback.
  • USB audio processor ×1; Speech-only capture mix; Playback is AEC reference → Amplifier ×1: Line out: room mix.
  • Amplifier ×1 → Loudspeakers ×2: Speaker lines.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → Main display ×1; Teaching material: AV output A: HDMI / DP.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → Caption display ×1; RU / EN / ZH; No administrative UI: AV output B: HDMI / DP.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → Managed room switch ×1; Media and control routes: Ethernet: 2 video + RU audio.
  • Managed room switch ×1; Media and control routes → Shared local platform; See EDU-04-system; Counted once for all rooms: Uplink: IP media, protocol TBD.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → PTZ camera ×1; Separate DC power: IP VISCA commands via room LAN (control/status/authorisation).
  • Shared local platform; See EDU-04-system; Counted once for all rooms → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: Proposed HTTPS API: captions / questions / status (control/status/authorisation).
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → Shared local platform; See EDU-04-system; Counted once for all rooms: Proposed HTTPS API: session commands / glossary (control/status/authorisation).
  • OPTION: guest laptop ×1; HDMI capture ×1 → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: USB: replaces desktop channel 2.
CAM
PTZ camera ×1 Separate DC power
CAP
SDI-to-USB capture ×1
PC
Teaching PC ×1 Separate lecturer application ×1 Operator monitor included
DESKTOP
Desktop / presentation Software source on the same PC
MAIN
Main display ×1 Teaching material
SUBS
Caption display ×1 RU / EN / ZH No administrative UI
NET
Managed room switch ×1 Media and control routes
PLATFORM
Shared local platform See EDU-04-system Counted once for all rooms
EXT
OPTION: guest laptop ×1 HDMI capture ×1
  1. CAM → CAP3G-SDI
  2. CAP → PCUSB video: channel 1
  3. DESKTOP → PCInternal capture: channel 2
  4. PC → MAINAV output A: HDMI / DP
  5. PC → SUBSAV output B: HDMI / DP
  6. PC → NETEthernet: 2 video + RU audio
  7. NET → PLATFORMUplink: IP media, protocol TBD
  8. EXT → PCUSB: replaces desktop channel 2

PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED Solid: media/data. Dashed: control/status. Installation set ×1 per room includes cabling, mounts and power. No automatic PTZ tracking; no remote student voice/video return. TTS playback into room speakers is outside the baseline. API/media protocol compatibility still requires developer confirmation.

Audio & return paths

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-04-room · Audio & return pathsProposed design with unconfirmed software status. One PTZ camera feeds SDI capture, while desktop capture provides the second video. The lecturer application sends both videos and original Russian speech to the shared local platform. Captions, questions and status return separately. The room has one main display and one caption display, separate from the PC operator monitor. PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED Solid: media/data. Dashed: control/status. Installation set ×1 per room includes cabling, mounts and power. No automatic PTZ tracking; no remote student voice/video return. TTS playback into room speakers is outside the baseline. API/media protocol compatibility still requires developer confirmation. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"9523e8dd7af17f955c88fb65e948fee2040d2562636b78ce3998bbcefc53d995","view":"audio","nodes":["PC","MIC","DSP","AMP","SPK"],"edges":["L04","L05","L06","L07","L08"]}PIXEL COMMAND SOLUTIONS / EDU-04-room / AUDIO & RETURN PATHSAudio & return pathsPROPOSED · SOFTWARE / PERFORMANCE UNVERIFIEDMIC → DSP: Analogue micAnalogue micDSP → PC: USB send: original RU speechUSB send: original RUspeechPC → DSP: USB receive: programme playbackUSB receive: programmeplaybackDSP → AMP: Line out: room mixLine out: room mixAMP → SPK: Speaker linesSpeaker linesTeaching PC ×1 Separate lecturer application ×1 Operator monitor includedPCTeaching PC ×1Lecturer microphone ×1MICLecturer microphone ×1USB audio processor ×1 Speech-only capture mix Playback is AEC referenceDSPUSB audio processor ×1Amplifier ×1AMPAmplifier ×1Loudspeakers ×2SPKLoudspeakers ×2AudioUSB / KVM
Devices, connections & design conditions 5 connections
  • PTZ camera ×1; Separate DC power → SDI-to-USB capture ×1: 3G-SDI.
  • SDI-to-USB capture ×1 → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: USB video: channel 1.
  • Desktop / presentation; Software source on the same PC → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: Internal capture: channel 2.
  • Lecturer microphone ×1 → USB audio processor ×1; Speech-only capture mix; Playback is AEC reference: Analogue mic.
  • USB audio processor ×1; Speech-only capture mix; Playback is AEC reference → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: USB send: original RU speech.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → USB audio processor ×1; Speech-only capture mix; Playback is AEC reference: USB receive: programme playback.
  • USB audio processor ×1; Speech-only capture mix; Playback is AEC reference → Amplifier ×1: Line out: room mix.
  • Amplifier ×1 → Loudspeakers ×2: Speaker lines.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → Main display ×1; Teaching material: AV output A: HDMI / DP.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → Caption display ×1; RU / EN / ZH; No administrative UI: AV output B: HDMI / DP.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → Managed room switch ×1; Media and control routes: Ethernet: 2 video + RU audio.
  • Managed room switch ×1; Media and control routes → Shared local platform; See EDU-04-system; Counted once for all rooms: Uplink: IP media, protocol TBD.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → PTZ camera ×1; Separate DC power: IP VISCA commands via room LAN (control/status/authorisation).
  • Shared local platform; See EDU-04-system; Counted once for all rooms → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: Proposed HTTPS API: captions / questions / status (control/status/authorisation).
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → Shared local platform; See EDU-04-system; Counted once for all rooms: Proposed HTTPS API: session commands / glossary (control/status/authorisation).
  • OPTION: guest laptop ×1; HDMI capture ×1 → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: USB: replaces desktop channel 2.
PC
Teaching PC ×1 Separate lecturer application ×1 Operator monitor included
MIC
Lecturer microphone ×1
DSP
USB audio processor ×1 Speech-only capture mix Playback is AEC reference
AMP
Amplifier ×1
SPK
Loudspeakers ×2
  1. MIC → DSPAnalogue mic
  2. DSP → PCUSB send: original RU speech
  3. PC → DSPUSB receive: programme playback
  4. DSP → AMPLine out: room mix
  5. AMP → SPKSpeaker lines

PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED Solid: media/data. Dashed: control/status. Installation set ×1 per room includes cabling, mounts and power. No automatic PTZ tracking; no remote student voice/video return. TTS playback into room speakers is outside the baseline. API/media protocol compatibility still requires developer confirmation.

Control & status

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-04-room · Control & statusProposed design with unconfirmed software status. One PTZ camera feeds SDI capture, while desktop capture provides the second video. The lecturer application sends both videos and original Russian speech to the shared local platform. Captions, questions and status return separately. The room has one main display and one caption display, separate from the PC operator monitor. PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED Solid: media/data. Dashed: control/status. Installation set ×1 per room includes cabling, mounts and power. No automatic PTZ tracking; no remote student voice/video return. TTS playback into room speakers is outside the baseline. API/media protocol compatibility still requires developer confirmation. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"9523e8dd7af17f955c88fb65e948fee2040d2562636b78ce3998bbcefc53d995","view":"control","nodes":["CAM","PC","PLATFORM"],"edges":["L13","L14","L15"]}PIXEL COMMAND SOLUTIONS / EDU-04-room / CONTROL & STATUSControl & statusPROPOSED · SOFTWARE / PERFORMANCE UNVERIFIEDPC → CAM: IP VISCA commands via room LANIP VISCA commands viaroom LANPLATFORM → PC: Proposed HTTPS API: captions / questions / statusProposed HTTPS API:captions / questions /statusPC → PLATFORM: Proposed HTTPS API: session commands / glossaryProposed HTTPS API:session commands /glossaryPTZ camera ×1 Separate DC powerCAMPTZ camera ×1Teaching PC ×1 Separate lecturer application ×1 Operator monitor includedPCTeaching PC ×1Shared local platform See EDU-04-system Counted once for all roomsPLATFORMShared local platformControl / status
Devices, connections & design conditions 3 connections
  • PTZ camera ×1; Separate DC power → SDI-to-USB capture ×1: 3G-SDI.
  • SDI-to-USB capture ×1 → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: USB video: channel 1.
  • Desktop / presentation; Software source on the same PC → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: Internal capture: channel 2.
  • Lecturer microphone ×1 → USB audio processor ×1; Speech-only capture mix; Playback is AEC reference: Analogue mic.
  • USB audio processor ×1; Speech-only capture mix; Playback is AEC reference → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: USB send: original RU speech.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → USB audio processor ×1; Speech-only capture mix; Playback is AEC reference: USB receive: programme playback.
  • USB audio processor ×1; Speech-only capture mix; Playback is AEC reference → Amplifier ×1: Line out: room mix.
  • Amplifier ×1 → Loudspeakers ×2: Speaker lines.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → Main display ×1; Teaching material: AV output A: HDMI / DP.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → Caption display ×1; RU / EN / ZH; No administrative UI: AV output B: HDMI / DP.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → Managed room switch ×1; Media and control routes: Ethernet: 2 video + RU audio.
  • Managed room switch ×1; Media and control routes → Shared local platform; See EDU-04-system; Counted once for all rooms: Uplink: IP media, protocol TBD.
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → PTZ camera ×1; Separate DC power: IP VISCA commands via room LAN (control/status/authorisation).
  • Shared local platform; See EDU-04-system; Counted once for all rooms → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: Proposed HTTPS API: captions / questions / status (control/status/authorisation).
  • Teaching PC ×1; Separate lecturer application ×1; Operator monitor included → Shared local platform; See EDU-04-system; Counted once for all rooms: Proposed HTTPS API: session commands / glossary (control/status/authorisation).
  • OPTION: guest laptop ×1; HDMI capture ×1 → Teaching PC ×1; Separate lecturer application ×1; Operator monitor included: USB: replaces desktop channel 2.
CAM
PTZ camera ×1 Separate DC power
PC
Teaching PC ×1 Separate lecturer application ×1 Operator monitor included
PLATFORM
Shared local platform See EDU-04-system Counted once for all rooms
  1. PC → CAMIP VISCA commands via room LAN
  2. PLATFORM → PCProposed HTTPS API: captions / questions / status
  3. PC → PLATFORMProposed HTTPS API: session commands / glossary

PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED Solid: media/data. Dashed: control/status. Installation set ×1 per room includes cabling, mounts and power. No automatic PTZ tracking; no remote student voice/video return. TTS playback into room speakers is outside the baseline. API/media protocol compatibility still requires developer confirmation.

Typical architecture · not a project drawing

Link to this drawing ↗

How it works · functional groups

Shared platform · original delivery and language services

Original lesson

Rooms → ingest

Two videos and original RU audio per room.

Delivery + archive

Original live media and recording continue independently of AI.

Authorised viewers

LAN browsers or protected internet delivery.

Language tracks

Russian speech

A copy of original speech enters processing.

Recognition + translation

RU captions; EN/ZH text and synthetic audio.

Player + archive

Language tracks accompany the original media.

Access and questions

Trusted entry

Moodle launch, student text questions and lecturer commands.

Local application

Own roles, courses, timetable and translated questions.

Enforced access

Delivery checks media rights; questions return to the lecturer.

Proposed system: software status and performance unverified. Targets: 12 rooms, 200 LAN + 50 WAN viewers per lesson, translated speech p95 ≤ 10 s. T00–T18 have not been run. These service groups are not physical server counts.

Devices & connections Inspect here
What these groups contain Devices and connection references

Rows explain related paths. A group can include parallel outputs; the full drawing shows individual devices, directions and conditions. Repeated IDs refer to the same equipment.

Original lesson

Rooms → ingest

ROOM · Rooms · target ×12 · See EDU-04-room

MEDIA · Media services · Ingest / sync / recording

Delivery + archive

LIVE · Authorised delivery · Live + archive playback

STORE · Media archive · 2 video + 3 audio tracks · Captions / text / materials

Authorised viewers

LAN · LAN browsers · Target: 200 per lesson · 2400 total

EDGE · Internet gateway · TLS / media access checks

WAN · Internet browsers · Target: 50 per lesson · 600 total

Connections: L01, L02, L03, L10, L11, L12, L13.

Language tracks

Russian speech

MEDIA · Media services · Ingest / sync / recording

Recognition + translation

SPEECH · Local speech pipeline · VAD / ASR RU · Translation RU to EN / ZH

TTS · Local TTS · EN / ZH audio only

Player + archive

LIVE · Authorised delivery · Live + archive playback

STORE · Media archive · 2 video + 3 audio tracks · Captions / text / materials

Connections: L04, L05, L06, L07, L08, L09.

Access and questions

Trusted entry

MOODLE · Institutional Moodle ×1

USERS · Student browsers · Same LAN / WAN viewers

TEACH · Lecturer applications · Same rooms as A

Local application

APP · Local application · RBAC / courses / timetable · Question translation EN/ZH to RU

DB · Relational database · Users / rights / lesson metadata

Enforced access

AUTH · Delivery + gateway in A · Check media and file access

TEACH · Lecturer applications · Same rooms as A

Connections: L14, L15, L16, L17, L18, L19.

Other devices, controls and supporting services

  • CAPTIONS · Speech pipeline in A
  • HEALTH · Rooms and services in A/B · Media / ASR / translation / TTS · App / storage / backup
  • OPS · Local monitoring and logs · DNS / time / TLS · Configuration management
  • ADMIN · Local administrator
  • BACKUP · Separate backup storage · Scope and RPO/RTO agreed
  • DATA · DB + media archive in A/B
  • POST · Post-processing · Summary / derived material · Live has priority
  • RESULTS · Archive in A · Publication status updated
  • NOTE · PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED · p95 translated speech delay ≤10 s is a validation target. · Solid: media/data. Dashed: control/status/authorisation. · Repeated actors refer to the same services; boxes are not physical server counts. · No student voice/video return. Moodle does not own local roles, courses or timetable.

Rooms share local media, language and archive services. Local and internet viewers use separate delivery routes with the same access rules.

Media

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-04-system · MediaProposed logical architecture in three views: media and language delivery; access and text questions; operation and recovery. Repeated services are detail views of the same system, not extra servers. Twelve rooms, 200 local and 50 internet viewers per lesson and p95 translated speech delay of at most ten seconds are unverified acceptance targets. PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED p95 translated speech delay ≤10 s is a validation target. Solid: media/data. Dashed: control/status/authorisation. Repeated actors refer to the same services; boxes are not physical server counts. No student voice/video return. Moodle does not own local roles, courses or timetable. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"5e8d250489fb28b937b4a2c68da4172ed2794876d994e9cf296ade0a4c5964ec","view":"a","nodes":["ROOM","MEDIA","LIVE","STORE","SPEECH","TTS","LAN","EDGE","WAN"],"edges":["L01","L02","L03","L04","L05","L06","L07","L08","L09","L10","L11","L12","L13"]}PIXEL COMMAND SOLUTIONS / EDU-04-system / MEDIAMediaPROPOSED · SOFTWARE / PERFORMANCE UNVERIFIEDROOM → MEDIA: IP ingest: protocol TBD 2 video + RU audio per roomIP ingest ·protocol TBDMEDIA → LIVE: Original channels Independent of AIOriginalmediaMEDIA → STORE: Original recordingOriginal recordingMEDIA → SPEECH: RU speechRU speechSPEECH → TTS: EN / ZH textEN / ZH textSPEECH → LIVE: RU / EN / ZH captionsRU / EN / ZH captionsSPEECH → STORE: Timed text / captionsTimed text / captionsTTS → LIVE: EN / ZH audioEN / ZH audioTTS → STORE: EN / ZH audioEN / ZH audio archiveSTORE → LIVE: Permitted recordingsRecordingsLIVE → LAN: Internal browser mediaLAN browser mediaLIVE → EDGE: Protected external routeProtected externalrouteEDGE → WAN: Browser mediaWAN browsermediaRooms · target ×12 See EDU-04-roomROOMRooms · target ×12Media services Ingest / sync / recordingMEDIAMedia servicesAuthorised delivery Live + archive playbackLIVEAuthorised deliveryMedia archive 2 video + 3 audio tracks Captions / text / materialsSTOREMedia archiveLocal speech pipeline VAD / ASR RU Translation RU to EN / ZHSPEECHLocal speech pipelineLocal TTS EN / ZH audio onlyTTSLocal TTSLAN browsers Target: 200 per lesson 2400 totalLANLAN browsersInternet gateway TLS / media access checksEDGEInternet gatewayInternet browsers Target: 50 per lesson 600 totalWANInternet browsersNetwork / dataAudio
Devices, connections & design conditions 13 connections
  • Rooms · target ×12; See EDU-04-room → Media services; Ingest / sync / recording: IP ingest: protocol TBD; 2 video + RU audio per room.
  • Media services; Ingest / sync / recording → Authorised delivery; Live + archive playback: Original channels; Independent of AI.
  • Media services; Ingest / sync / recording → Media archive; 2 video + 3 audio tracks; Captions / text / materials: Original recording.
  • Media services; Ingest / sync / recording → Local speech pipeline; VAD / ASR RU; Translation RU to EN / ZH: RU speech.
  • Local speech pipeline; VAD / ASR RU; Translation RU to EN / ZH → Local TTS; EN / ZH audio only: EN / ZH text.
  • Local speech pipeline; VAD / ASR RU; Translation RU to EN / ZH → Authorised delivery; Live + archive playback: RU / EN / ZH captions.
  • Local speech pipeline; VAD / ASR RU; Translation RU to EN / ZH → Media archive; 2 video + 3 audio tracks; Captions / text / materials: Timed text / captions.
  • Local TTS; EN / ZH audio only → Authorised delivery; Live + archive playback: EN / ZH audio.
  • Local TTS; EN / ZH audio only → Media archive; 2 video + 3 audio tracks; Captions / text / materials: EN / ZH audio.
  • Media archive; 2 video + 3 audio tracks; Captions / text / materials → Authorised delivery; Live + archive playback: Permitted recordings.
  • Authorised delivery; Live + archive playback → LAN browsers; Target: 200 per lesson; 2400 total: Internal browser media.
  • Authorised delivery; Live + archive playback → Internet gateway; TLS / media access checks: Protected external route.
  • Internet gateway; TLS / media access checks → Internet browsers; Target: 50 per lesson; 600 total: Browser media.
  • Institutional Moodle ×1 → Local application; RBAC / courses / timetable; Question translation EN/ZH to RU: Trusted launch + link; Protocol TBD (control/status/authorisation).
  • Student browsers; Same LAN / WAN viewers → Local application; RBAC / courses / timetable; Question translation EN/ZH to RU: HTTPS API: text questions; WAN through access gateway.
  • Local application; RBAC / courses / timetable; Question translation EN/ZH to RU ↔ Relational database; Users / rights / lesson metadata: DB interface: TBD.
  • Local application; RBAC / courses / timetable; Question translation EN/ZH to RU → Delivery + gateway in A; Check media and file access: Authorisation decisions (control/status/authorisation).
  • Lecturer applications; Same rooms as A → Local application; RBAC / courses / timetable; Question translation EN/ZH to RU: Proposed HTTPS API; Commands / glossary (control/status/authorisation).
  • Local application; RBAC / courses / timetable; Question translation EN/ZH to RU → Lecturer applications; Same rooms as A: Proposed HTTPS API; Questions / captions / status (control/status/authorisation).
  • Speech pipeline in A → Local application; RBAC / courses / timetable; Question translation EN/ZH to RU: RU / EN / ZH captions.
  • Rooms and services in A/B; Media / ASR / translation / TTS; App / storage / backup → Local monitoring and logs; DNS / time / TLS; Configuration management: Status / errors / queue depth (control/status/authorisation).
  • Local monitoring and logs; DNS / time / TLS; Configuration management → Local administrator: Lesson / service / time (control/status/authorisation).
  • Local monitoring and logs; DNS / time / TLS; Configuration management → Separate backup storage; Scope and RPO/RTO agreed: Configuration backup.
  • DB + media archive in A/B → Separate backup storage; Scope and RPO/RTO agreed: DB and metadata backup; Media if agreed.
  • DB + media archive in A/B → Post-processing; Summary / derived material; Live has priority: Background jobs.
  • Post-processing; Summary / derived material; Live has priority → Archive in A; Publication status updated: Results and job state.
ROOM
Rooms · target ×12 See EDU-04-room
MEDIA
Media services Ingest / sync / recording
LIVE
Authorised delivery Live + archive playback
STORE
Media archive 2 video + 3 audio tracks Captions / text / materials
SPEECH
Local speech pipeline VAD / ASR RU Translation RU to EN / ZH
TTS
Local TTS EN / ZH audio only
LAN
LAN browsers Target: 200 per lesson 2400 total
EDGE
Internet gateway TLS / media access checks
WAN
Internet browsers Target: 50 per lesson 600 total
  1. ROOM → MEDIAIP ingest: protocol TBD 2 video + RU audio per room
  2. MEDIA → LIVEOriginal channels Independent of AI
  3. MEDIA → STOREOriginal recording
  4. MEDIA → SPEECHRU speech
  5. SPEECH → TTSEN / ZH text
  6. SPEECH → LIVERU / EN / ZH captions
  7. SPEECH → STORETimed text / captions
  8. TTS → LIVEEN / ZH audio
  9. TTS → STOREEN / ZH audio
  10. STORE → LIVEPermitted recordings
  11. LIVE → LANInternal browser media
  12. LIVE → EDGEProtected external route
  13. EDGE → WANBrowser media

PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED p95 translated speech delay ≤10 s is a validation target. Solid: media/data. Dashed: control/status/authorisation. Repeated actors refer to the same services; boxes are not physical server counts. No student voice/video return. Moodle does not own local roles, courses or timetable.

Access

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-04-system · AccessProposed logical architecture in three views: media and language delivery; access and text questions; operation and recovery. Repeated services are detail views of the same system, not extra servers. Twelve rooms, 200 local and 50 internet viewers per lesson and p95 translated speech delay of at most ten seconds are unverified acceptance targets. PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED p95 translated speech delay ≤10 s is a validation target. Solid: media/data. Dashed: control/status/authorisation. Repeated actors refer to the same services; boxes are not physical server counts. No student voice/video return. Moodle does not own local roles, courses or timetable. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"5e8d250489fb28b937b4a2c68da4172ed2794876d994e9cf296ade0a4c5964ec","view":"b","nodes":["MOODLE","APP","USERS","DB","AUTH","TEACH","CAPTIONS"],"edges":["L14","L15","L16","L17","L18","L19","L20"]}PIXEL COMMAND SOLUTIONS / EDU-04-system / ACCESSAccessPROPOSED · SOFTWARE / PERFORMANCE UNVERIFIEDMOODLE → APP: Trusted launch + link Protocol TBDTrusted launch + linkUSERS → APP: HTTPS API: text questions WAN through access gatewayHTTPS API: textquestionsAPP ↔ DB: DB interface: TBDDB interface: TBDAPP → AUTH: Authorisation decisionsAuthorisation decisionsTEACH → APP: Proposed HTTPS API Commands / glossaryProposed HTTPS APIAPP → TEACH: Proposed HTTPS API Questions / captions / statusProposed HTTPS APICAPTIONS → APP: RU / EN / ZH captionsRU / EN / ZH captionsInstitutional Moodle ×1MOODLEInstitutional Moodle×1Local application RBAC / courses / timetable Question translation EN/ZH to RUAPPLocal applicationStudent browsers Same LAN / WAN viewersUSERSStudent browsersRelational database Users / rights / lesson metadataDBRelational databaseDelivery + gateway in A Check media and file accessAUTHDelivery + gateway inALecturer applications Same rooms as ATEACHLecturer applicationsSpeech pipeline in ACAPTIONSSpeech pipeline in AControl / statusNetwork / data
Devices, connections & design conditions 7 connections
  • Rooms · target ×12; See EDU-04-room → Media services; Ingest / sync / recording: IP ingest: protocol TBD; 2 video + RU audio per room.
  • Media services; Ingest / sync / recording → Authorised delivery; Live + archive playback: Original channels; Independent of AI.
  • Media services; Ingest / sync / recording → Media archive; 2 video + 3 audio tracks; Captions / text / materials: Original recording.
  • Media services; Ingest / sync / recording → Local speech pipeline; VAD / ASR RU; Translation RU to EN / ZH: RU speech.
  • Local speech pipeline; VAD / ASR RU; Translation RU to EN / ZH → Local TTS; EN / ZH audio only: EN / ZH text.
  • Local speech pipeline; VAD / ASR RU; Translation RU to EN / ZH → Authorised delivery; Live + archive playback: RU / EN / ZH captions.
  • Local speech pipeline; VAD / ASR RU; Translation RU to EN / ZH → Media archive; 2 video + 3 audio tracks; Captions / text / materials: Timed text / captions.
  • Local TTS; EN / ZH audio only → Authorised delivery; Live + archive playback: EN / ZH audio.
  • Local TTS; EN / ZH audio only → Media archive; 2 video + 3 audio tracks; Captions / text / materials: EN / ZH audio.
  • Media archive; 2 video + 3 audio tracks; Captions / text / materials → Authorised delivery; Live + archive playback: Permitted recordings.
  • Authorised delivery; Live + archive playback → LAN browsers; Target: 200 per lesson; 2400 total: Internal browser media.
  • Authorised delivery; Live + archive playback → Internet gateway; TLS / media access checks: Protected external route.
  • Internet gateway; TLS / media access checks → Internet browsers; Target: 50 per lesson; 600 total: Browser media.
  • Institutional Moodle ×1 → Local application; RBAC / courses / timetable; Question translation EN/ZH to RU: Trusted launch + link; Protocol TBD (control/status/authorisation).
  • Student browsers; Same LAN / WAN viewers → Local application; RBAC / courses / timetable; Question translation EN/ZH to RU: HTTPS API: text questions; WAN through access gateway.
  • Local application; RBAC / courses / timetable; Question translation EN/ZH to RU ↔ Relational database; Users / rights / lesson metadata: DB interface: TBD.
  • Local application; RBAC / courses / timetable; Question translation EN/ZH to RU → Delivery + gateway in A; Check media and file access: Authorisation decisions (control/status/authorisation).
  • Lecturer applications; Same rooms as A → Local application; RBAC / courses / timetable; Question translation EN/ZH to RU: Proposed HTTPS API; Commands / glossary (control/status/authorisation).
  • Local application; RBAC / courses / timetable; Question translation EN/ZH to RU → Lecturer applications; Same rooms as A: Proposed HTTPS API; Questions / captions / status (control/status/authorisation).
  • Speech pipeline in A → Local application; RBAC / courses / timetable; Question translation EN/ZH to RU: RU / EN / ZH captions.
  • Rooms and services in A/B; Media / ASR / translation / TTS; App / storage / backup → Local monitoring and logs; DNS / time / TLS; Configuration management: Status / errors / queue depth (control/status/authorisation).
  • Local monitoring and logs; DNS / time / TLS; Configuration management → Local administrator: Lesson / service / time (control/status/authorisation).
  • Local monitoring and logs; DNS / time / TLS; Configuration management → Separate backup storage; Scope and RPO/RTO agreed: Configuration backup.
  • DB + media archive in A/B → Separate backup storage; Scope and RPO/RTO agreed: DB and metadata backup; Media if agreed.
  • DB + media archive in A/B → Post-processing; Summary / derived material; Live has priority: Background jobs.
  • Post-processing; Summary / derived material; Live has priority → Archive in A; Publication status updated: Results and job state.
MOODLE
Institutional Moodle ×1
APP
Local application RBAC / courses / timetable Question translation EN/ZH to RU
USERS
Student browsers Same LAN / WAN viewers
DB
Relational database Users / rights / lesson metadata
AUTH
Delivery + gateway in A Check media and file access
TEACH
Lecturer applications Same rooms as A
CAPTIONS
Speech pipeline in A
  1. MOODLE → APPTrusted launch + link Protocol TBD
  2. USERS → APPHTTPS API: text questions WAN through access gateway
  3. APP ↔ DBDB interface: TBD
  4. APP → AUTHAuthorisation decisions
  5. TEACH → APPProposed HTTPS API Commands / glossary
  6. APP → TEACHProposed HTTPS API Questions / captions / status
  7. CAPTIONS → APPRU / EN / ZH captions

PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED p95 translated speech delay ≤10 s is a validation target. Solid: media/data. Dashed: control/status/authorisation. Repeated actors refer to the same services; boxes are not physical server counts. No student voice/video return. Moodle does not own local roles, courses or timetable.

Operation

Signal flow. Devices, connections and conditions follow the drawing.Open SVG ↗
EDU-04-system · OperationProposed logical architecture in three views: media and language delivery; access and text questions; operation and recovery. Repeated services are detail views of the same system, not extra servers. Twelve rooms, 200 local and 50 internet viewers per lesson and p95 translated speech delay of at most ten seconds are unverified acceptance targets. PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED p95 translated speech delay ≤10 s is a validation target. Solid: media/data. Dashed: control/status/authorisation. Repeated actors refer to the same services; boxes are not physical server counts. No student voice/video return. Moodle does not own local roles, courses or timetable. Repeated device identifiers refer to the same equipment across views. Equipment illustrations are schematic; labels define quantities.{"sourceHash":"5e8d250489fb28b937b4a2c68da4172ed2794876d994e9cf296ade0a4c5964ec","view":"c","nodes":["HEALTH","OPS","ADMIN","BACKUP","DATA","POST","RESULTS"],"edges":["L21","L22","L23","L24","L25","L26"]}PIXEL COMMAND SOLUTIONS / EDU-04-system / OPERATIONOperationPROPOSED · SOFTWARE / PERFORMANCE UNVERIFIEDHEALTH → OPS: Status / errors / queue depthStatus / errors / queuedepthOPS → ADMIN: Lesson / service / timeLesson / service / timeOPS → BACKUP: Configuration backupConfiguration backupDATA → BACKUP: DB and metadata backup Media if agreedDB and metadata backupDATA → POST: Background jobsBackground jobsPOST → RESULTS: Results and job stateResults and job stateRooms and services in A/B Media / ASR / translation / TTS App / storage / backupHEALTHRooms and services inA/BLocal monitoring and logs DNS / time / TLS Configuration managementOPSLocal monitoring andlogsLocal administratorADMINLocal administratorSeparate backup storage Scope and RPO/RTO agreedBACKUPSeparate backupstorageDB + media archive in A/BDATADB + media archive inA/BPost-processing Summary / derived material Live has priorityPOSTPost-processingArchive in A Publication status updatedRESULTSArchive in AControl / statusNetwork / data
Devices, connections & design conditions 6 connections
  • Rooms · target ×12; See EDU-04-room → Media services; Ingest / sync / recording: IP ingest: protocol TBD; 2 video + RU audio per room.
  • Media services; Ingest / sync / recording → Authorised delivery; Live + archive playback: Original channels; Independent of AI.
  • Media services; Ingest / sync / recording → Media archive; 2 video + 3 audio tracks; Captions / text / materials: Original recording.
  • Media services; Ingest / sync / recording → Local speech pipeline; VAD / ASR RU; Translation RU to EN / ZH: RU speech.
  • Local speech pipeline; VAD / ASR RU; Translation RU to EN / ZH → Local TTS; EN / ZH audio only: EN / ZH text.
  • Local speech pipeline; VAD / ASR RU; Translation RU to EN / ZH → Authorised delivery; Live + archive playback: RU / EN / ZH captions.
  • Local speech pipeline; VAD / ASR RU; Translation RU to EN / ZH → Media archive; 2 video + 3 audio tracks; Captions / text / materials: Timed text / captions.
  • Local TTS; EN / ZH audio only → Authorised delivery; Live + archive playback: EN / ZH audio.
  • Local TTS; EN / ZH audio only → Media archive; 2 video + 3 audio tracks; Captions / text / materials: EN / ZH audio.
  • Media archive; 2 video + 3 audio tracks; Captions / text / materials → Authorised delivery; Live + archive playback: Permitted recordings.
  • Authorised delivery; Live + archive playback → LAN browsers; Target: 200 per lesson; 2400 total: Internal browser media.
  • Authorised delivery; Live + archive playback → Internet gateway; TLS / media access checks: Protected external route.
  • Internet gateway; TLS / media access checks → Internet browsers; Target: 50 per lesson; 600 total: Browser media.
  • Institutional Moodle ×1 → Local application; RBAC / courses / timetable; Question translation EN/ZH to RU: Trusted launch + link; Protocol TBD (control/status/authorisation).
  • Student browsers; Same LAN / WAN viewers → Local application; RBAC / courses / timetable; Question translation EN/ZH to RU: HTTPS API: text questions; WAN through access gateway.
  • Local application; RBAC / courses / timetable; Question translation EN/ZH to RU ↔ Relational database; Users / rights / lesson metadata: DB interface: TBD.
  • Local application; RBAC / courses / timetable; Question translation EN/ZH to RU → Delivery + gateway in A; Check media and file access: Authorisation decisions (control/status/authorisation).
  • Lecturer applications; Same rooms as A → Local application; RBAC / courses / timetable; Question translation EN/ZH to RU: Proposed HTTPS API; Commands / glossary (control/status/authorisation).
  • Local application; RBAC / courses / timetable; Question translation EN/ZH to RU → Lecturer applications; Same rooms as A: Proposed HTTPS API; Questions / captions / status (control/status/authorisation).
  • Speech pipeline in A → Local application; RBAC / courses / timetable; Question translation EN/ZH to RU: RU / EN / ZH captions.
  • Rooms and services in A/B; Media / ASR / translation / TTS; App / storage / backup → Local monitoring and logs; DNS / time / TLS; Configuration management: Status / errors / queue depth (control/status/authorisation).
  • Local monitoring and logs; DNS / time / TLS; Configuration management → Local administrator: Lesson / service / time (control/status/authorisation).
  • Local monitoring and logs; DNS / time / TLS; Configuration management → Separate backup storage; Scope and RPO/RTO agreed: Configuration backup.
  • DB + media archive in A/B → Separate backup storage; Scope and RPO/RTO agreed: DB and metadata backup; Media if agreed.
  • DB + media archive in A/B → Post-processing; Summary / derived material; Live has priority: Background jobs.
  • Post-processing; Summary / derived material; Live has priority → Archive in A; Publication status updated: Results and job state.
HEALTH
Rooms and services in A/B Media / ASR / translation / TTS App / storage / backup
OPS
Local monitoring and logs DNS / time / TLS Configuration management
ADMIN
Local administrator
BACKUP
Separate backup storage Scope and RPO/RTO agreed
DATA
DB + media archive in A/B
POST
Post-processing Summary / derived material Live has priority
RESULTS
Archive in A Publication status updated
  1. HEALTH → OPSStatus / errors / queue depth
  2. OPS → ADMINLesson / service / time
  3. OPS → BACKUPConfiguration backup
  4. DATA → BACKUPDB and metadata backup Media if agreed
  5. DATA → POSTBackground jobs
  6. POST → RESULTSResults and job state

PROPOSED DESIGN · SOFTWARE STATUS UNVERIFIED p95 translated speech delay ≤10 s is a validation target. Solid: media/data. Dashed: control/status/authorisation. Repeated actors refer to the same services; boxes are not physical server counts. No student voice/video return. Moodle does not own local roles, courses or timetable.

Typical architecture · not a project drawing

Link to this drawing ↗

From a live lesson to permitted replay

Lecturer application

The proposed workflow includes sign-in, assigned course and lesson selection, preview of both video channels, audio checks, start/stop controls, recording and connection status, camera presets, terminology tools and incoming questions.

Student browser

The proposed player presents two independent video channels, adjustable layouts, original RU audio, synthetic EN/ZH audio and RU/EN/ZH captions. Language changes should work without reloading. Students send RU, EN or ZH text questions; English and Chinese questions are translated into Russian for the lecturer. Student microphones, webcams and spoken playback of questions are outside the base scope. A local viewing link and QR code are proposed; access checks still apply.

Archive and access

The proposed archive links the two videos, audio tracks, captions, timed transcript, automatic summary and supporting material to the lesson. Filters include course, group, lecturer and date. Moodle provides a trusted entry and a link to the requested material. The local system maintains its own roles, permissions, courses and timetable; Moodle does not automatically overwrite them. Public viewing, when enabled for an individual lecture, must leave other courses and recordings protected.

03 · Scope & limits

What is included. What needs agreement.

Room kit and shared services

One teaching PC with the lecturer application, one PTZ camera, one SDI-to-USB capture device, one lecturer microphone, one USB audio processor/interface, one amplifier and two loudspeakers. The main display shows material; a second display shows captions without the administrative interface. A managed room switch and an installation set support the room. The baseline captures the teaching PC's desktop; an external laptop needs an additional HDMI capture device. PTZ movement and at least two presets are controlled over the network. Automatic tracking is outside the base scope.

Equipment schedule · 10 groups

Example quantities, not an approved procurement schedule. Catalogue links provide component specifications; they do not confirm system compatibility or availability.

Teaching PC, including operator monitor
1

Selected with institutional IT

Main / additional AV displays
1 / 1 captions

Display options where LED suits the design; other display types by specification

Display options →
Presentation switching / distribution
Desktop capture; external input optional

Switching equipment

Switching equipment →
Lecturer / question microphones
1 / 0

Microphones

Microphones →
Audio processor
1 with the required USB audio and reference paths

Mixers and processors

Mixers and processors →
Amplifier / loudspeakers
1 / 2

Amplifiers · Loudspeakers

Amplifiers →Loudspeakers →
PTZ cameras / SDI-to-USB capture devices
1 / 1

Camera and capture interfaces selected together

Recorder / recording medium
Shared server recording

Selected to the capture and retention brief

Integrated room panel/controller / recording indicator
Controls and status in the lecturer application

Selected to device control interfaces

Managed room switch / installation set
1 / 1

Network, cabling, mounting and power by project

Room quantities repeat for each equipped room. Shared media and application services, speech processing, storage, backup, network delivery and the Moodle interface are sized and counted once for the whole system. Logical service counts do not specify the number of servers or GPUs.

Browse equipment specifications →

What we need to demonstrate

Demonstrate lecturer application, two browser videos, languages, questions, archive and Moodle entry; test concurrent load and failures.

Handover evidence: Versioned test report with measured results, exceptions and recovery evidence.

Validation targets: 12 concurrent rooms, 200 local and 50 internet viewers per lesson, and p95 translated-speech delay at or below 10 seconds. These are not measured results or guaranteed service levels. Agree language quality, delay definition, hardware, software, content and network conditions before testing.

Discuss this option · EDU-04

04 · From brief to handover

Agree the workflow before choosing the hardware.

Start with the people, activities and operating conditions. Confirm the design, interfaces and acceptance plan before procurement and installation.

  1. 01

    Scope and architecture

    Define teaching, recording and participation workflows. Agree room counts, viewer targets, access and retention. Select the configuration and document its boundaries.

  2. 02

    Design and approval

    Issue display and microphone layouts, signal and control diagrams, port schedules and equipment requirements. For EDU-04, include local platform roles, language timing, network/storage calculations and the Moodle interface.

  3. 03

    Selection and supply

    Confirm compatible devices, PC interfaces, software versions, licences and recording media. Resolve supply status and acceptance dependencies before ordering.

  4. 04

    Installation and programming

    Install and label the room system, configure audio mixes, camera presets and controls. Integrate the selected recording/conferencing service; for EDU-04, configure the validated application and server functions, permissions, language services, monitoring and backup.

  5. 05

    Commissioning and tests

    Run real teaching scenarios and record the results. Check recordings and calls where included. Test EDU-04 against the agreed language, load, access and recovery targets before accepting any performance claim.

  6. 06

    Handover

    Deliver as-built diagrams, port schedules, configuration backups, licence records and test reports. Train lecturers and administrators in operation, publication and recovery, with an agreed support scope.

Detailed stages and deliverables →

05 · Team experience

Related work, with its own brief.

These documented projects are separate from the reference designs (EDU-01, EDU-02, EDU-03, EDU-04). Each records its own scope and outcome.

Illustrative visualisation of a lecture auditorium with stage displays, not the project site
Illustrative visual
RC-01
Education

University auditorium AV complex

Stage display, sound, conferencing and central control brought into one system for teaching, presentations and formal events.

Display
6.912 m stage LED display
Audio
Sound reinforcement and DSP
Video
Video routing and PTZ cameras

Commissioned and handed over with staff training.

Illustrative visualisation of an auditorium stage with a central screen and side displays, not the project site
Illustrative visual
RC-02
Education

Auditorium stage display complex

A large LED stage surface brought together with video switching, capture and distribution equipment.

Display
Indoor LED display exceeding 20 m²
Video
Video switching
Cameras
PTZ cameras

Stage video display, distribution and recording delivered as one system.

Explore our team’s project experience →

Planning a specification?

The full technical notes retain application scenarios, detailed architecture, design parameters, interfaces, standards, available project drawings and questions to resolve.

Design requirements →IT and building interfaces →Project drawing →Inputs and FAQ →

Classroom layout and viewing positions →

Next step

Plan the system around your lessons.

Share the room plans, sample teaching material and the way students should participate. We can define the configuration, integration boundaries and checks needed for your proposal. Your selected configuration will be included in the enquiry.

Discuss your requirementsSend RFQ / BOQ
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