Hybrid learning, translation & archive EDU-04

• 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.

• 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.

• 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.

• 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.

• 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.

• 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.