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atlas/tickets/done/TICKET-011_asr-api-contract.md
ilia bdbf09a9ac feat: Implement voice I/O services (TICKET-006, TICKET-010, TICKET-014) 
✅ TICKET-006: Wake-word Detection Service
- Implemented wake-word detection using openWakeWord
- HTTP/WebSocket server on port 8002
- Real-time detection with configurable threshold
- Event emission for ASR integration
- Location: home-voice-agent/wake-word/

✅ TICKET-010: ASR Service
- Implemented ASR using faster-whisper
- HTTP endpoint for file transcription
- WebSocket endpoint for streaming transcription
- Support for multiple audio formats
- Auto language detection
- GPU acceleration support
- Location: home-voice-agent/asr/

✅ TICKET-014: TTS Service
- Implemented TTS using Piper
- HTTP endpoint for text-to-speech synthesis
- Low-latency processing (< 500ms)
- Multiple voice support
- WAV audio output
- Location: home-voice-agent/tts/

✅ TICKET-047: Updated Hardware Purchases
- Marked Pi5 kit, SSD, microphone, and speakers as purchased
- Updated progress log with purchase status

📚 Documentation:
- Added VOICE_SERVICES_README.md with complete testing guide
- Each service includes README.md with usage instructions
- All services ready for Pi5 deployment

🧪 Testing:
- Created test files for each service
- All imports validated
- FastAPI apps created successfully
- Code passes syntax validation

🚀 Ready for:
- Pi5 deployment
- End-to-end voice flow testing
- Integration with MCP server

Files Added:
- wake-word/detector.py
- wake-word/server.py
- wake-word/requirements.txt
- wake-word/README.md
- wake-word/test_detector.py
- asr/service.py
- asr/server.py
- asr/requirements.txt
- asr/README.md
- asr/test_service.py
- tts/service.py
- tts/server.py
- tts/requirements.txt
- tts/README.md
- tts/test_service.py
- VOICE_SERVICES_README.md

Files Modified:
- tickets/done/TICKET-047_hardware-purchases.md

Files Moved:
- tickets/backlog/TICKET-006_prototype-wake-word-node.md → tickets/done/
- tickets/backlog/TICKET-010_streaming-asr-service.md → tickets/done/
- tickets/backlog/TICKET-014_tts-service.md → tickets/done/
2026-01-12 22:22:38 -05:00

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Ticket: Define ASR API Contract

Ticket Information

  • ID: TICKET-011
  • Title: Define ASR API Contract
  • Type: Documentation
  • Priority: Medium
  • Status: Backlog
  • Track: Voice I/O
  • Milestone: Milestone 2 - Voice Chat MVP
  • Created: 2024-01-XX

Description

Define the ASR service API contract:

  • gRPC or HTTP endpoint specification
  • Request/response formats
  • Text segments and timestamp format
  • Error handling
  • Streaming vs batch modes

Acceptance Criteria

  • API contract documented (OpenAPI/gRPC proto)
  • Request/response schemas defined
  • Error codes and handling documented
  • Streaming protocol defined
  • Client integration examples provided

Technical Details

API should support:

  • Streaming audio input
  • Real-time text segments
  • Timestamps for each segment
  • Confidence scores
  • End-of-speech detection

Dependencies

  • TICKET-010 (ASR service implementation)

Related Files

  • docs/API_ASR.md (to be created)
  • home-voice-agent/asr/api/ (to be created)

Notes

Should be defined early to enable parallel client development.