Changed level calculation from RMS to peak detection to show
more realistic and responsive meter values.
The Problem:
- RMS calculation produced values typically in 0-30% range
- Audio signals have low average RMS (0.1-0.3 for music)
- Meters appeared broken, never reaching higher levels
The Solution:
- Switched to peak detection (max absolute value)
- Peaks now properly show 0-100% range
- More responsive to transients and dynamics
- Matches typical DAW meter behavior
Algorithm Change:
Before (RMS):
rms = sqrt(sum(normalized²) / length)
After (Peak):
peak = max(abs(normalized))
Applied to Both:
- Recording input level monitoring (useRecording)
- Playback output level monitoring (useMultiTrackPlayer)
Benefits:
✅ Full 0-100% range utilization
✅ More responsive visual feedback
✅ Accurate representation of audio peaks
✅ Consistent with professional audio software
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Fixed the input level meter staying at 0% during recording by:
Closure Issue Resolution:
- Added isMonitoringRef to track monitoring state independent of React state
- Removed state dependencies from monitorInputLevel callback
- Animation loop now checks ref instead of stale closure state
Changes:
- Set isMonitoringRef.current = true when starting recording
- Set isMonitoringRef.current = false when stopping/pausing recording
- Animation frame continues while ref is true, stops when false
- Proper cleanup in stopRecording, pauseRecording, and unmount effect
This ensures the requestAnimationFrame loop continues properly and
updates the RMS level calculation in real-time during recording.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Added recording capabilities to the multi-track editor:
- useRecording hook with MediaRecorder API integration
- Audio input device enumeration and selection
- Microphone permission handling
- Input level monitoring with RMS calculation
- InputLevelMeter component with visual feedback
- Record-enable button per track with pulsing indicator
- Real-time input level display when recording
Recording infrastructure is complete. Next: integrate into AudioEditor
for global recording control and buffer storage.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
