- Fix text erasure between TTS audio chunks (bFullTextReceived guard):
partial text now persists across all chunks of the same utterance instead
of being erased after chunk 1's queue empties
- Add audio pre-buffering (AudioPreBufferMs, default 250ms) to absorb TTS
inter-chunk gaps and eliminate mid-sentence audio pauses
- Lip sync pauses viseme queue consumption during pre-buffer to stay in sync
- Inter-frame interpolation (lerp between consumed and next queued frame)
for smoother mouth transitions instead of 32ms step-wise jumps
- Reduce double-smoothing (blendshape smooth 0.8→0.4, release 0.5→0.65)
- Adjust duration weights (vowels 2.0/1.7, plosives 0.8, silence 1.0)
- UI range refinement (AmplitudeScale 0.5-1.0, SmoothingSpeed 35-65)
- Silence padding capped at 512 samples (32ms) to prevent buffer accumulation
- Audio playback restart on buffer underrun during speech
- Optimized log levels (most debug→Verbose, kept key diagnostics at Log)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
j.foucher
7dfffdbad8