Another dependency the app should not be asking the platform for:
- audio_decode — MP3 (layer 3, LSF tables, synthesis) and Ogg Vorbis
(codebooks, floor, residue, MDCT) decoders, with tag reading. Both are
checked against oracle fixtures rather than against our own expectations.
- audio_encode — an Ogg Vorbis encoder: MDCT, psychoacoustics, floor and
Huffman coding, setup tables, plus `oggenc` and `audiobench` binaries.
- audio_picture — waveform and spectrogram rendering, and compositing.
- audio_lyrics — word-level lyric alignment (DTW plus a DP snap) and the
baked schema behind karaoke timing.
- audio_sidechannels — the side-channel plumbing between them.
libs/voice grows a CUDA backend and an alignment path beside its CPU decoder,
with a `whisper_parity` binary to keep the two honest.
Ports the silero v5 16k branch to pure rust (minimal onnx-protobuf weight
extraction, hardcoded graph: stft-conv, 4x conv+relu, lstm cell, sigmoid
head), 512-sample chunks with 64-sample carried context. Validated against
onnxruntime to 2.3e-6 max diff (fixtures committed), ~425us/chunk release.
Model loads from repo-root silero_vad.onnx or MAKEPAD_VAD_MODEL. vad-test
bin for wav files. window_voice_input now gates packets on vad probability
(0.5 enter / 0.35 exit) and falls back to the rms gate when the model file
is missing — the log line says which gate is active.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
