# 06. Implement Audio Waveform Analysis

meta:
  id: merged-waveform-06
  feature: merged-waveform
  priority: P2
  depends_on: []
  tags: [audio, waveform, analysis]

objective:
- Analyze audio data to extract waveform information
- Create real-time waveform data from audio streams
- Generate waveform data points for visualization

deliverables:
- Audio analysis utility
- Waveform data extraction function
- Integration with audio backend

steps:
1. Research and select audio waveform analysis library (e.g., `audiowaveform`)
2. Create `src/utils/audio-waveform.ts`
3. Implement audio data extraction from backend
4. Generate waveform data points (amplitude values)
5. Add sample rate and duration normalization

tests:
- Unit: Test waveform generation from sample audio
- Integration: Test with real audio playback
- Performance: Measure waveform generation overhead

acceptance_criteria:
- Waveform data is generated from audio content
- Data points represent audio amplitude accurately
- Generation works with real-time audio streams

validation:
- Generate waveform from sample MP3 file
- Verify amplitude data matches audio peaks
- Test with different audio formats

notes:
- Consider using `ffmpeg` or `sox` for offline analysis
- For real-time: analyze audio chunks during playback
- Waveform resolution: 64-256 data points for TUI display
- Normalize amplitude to 0-1 range