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Author SHA1 Message Date
osobhandClaude Opus 4.7 a5cedfb46a rtx-csm: emotional_speech_guide — CREMA-D vs RAVDESS firdhokk verdict 
8-gen bench (4 emotions × 2 corpora) at seed=42 against firdhokk
Whisper-LV3:

  target    RAVDESS              CREMA-D
  happy     happy (0.999) ✓      happy (0.999) ✓
  angry     neutral (0.92)       sad (0.99)
  fearful   happy (0.998)        fearful (0.984) ✓
  sad       angry (0.99)         fearful (0.99)

CREMA-D 2/4 vs RAVDESS 1/4. Larger / more naturalistic corpus
produces more class-pure fearful direction. Neither corpus solves
angry or sad — recipe shifts into 'vague expressivity' rather than
class-specific corners.

Practical: prefer CREMA-D when available; A/B both per emotion if
class precision matters.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>
 2026-04-30 00:01:02 -07:00
osobhandClaude Opus 4.7 938b54a2b0 rtx-csm: AudioSeal watermark — Rust port end-to-end 
SEANet generator + detector matching `facebook/audioseal` reference layout
(weight_norm-merged via pure-Rust pickle reader). Verified on real CSM
speech: mean_presence=0.9943, 16/16 message bits decoded.

- src/audioseal.rs: SeanetEncoder (4-stage strided downsample, 2-layer
  LSTM bottleneck at 512 channels, 128-dim projection), MsgProcessor
  (16-bit message via embedding sum + broadcast-add), SeanetDecoder,
  Generator (encoder+msg+decoder), Detector (encoder + single 320×
  reverse_convolution + 1×1 head). Padding mirrors audiocraft
  _get_extra_padding_for_conv1d exactly.
- src/audioseal_convert.rs: candle_core::pickle reads .pth directly;
  merge_weight_norm computes g*v/‖v‖ over all axes except 0; writes
  flat safetensors keyed identically to what Generator/Detector read.
- examples/audioseal_inspect.rs: dumps tensor keys + shapes.
- examples/audioseal_convert.rs: HF download + convert CLI.
- examples/audioseal_demo.rs: load + embed + detect on real WAV or
  synthetic burst, optionally writes watermarked WAV.
- audio_io.rs gains generic load_mono_at_rate, resample, write_wav_mono
  (16 kHz path needed for AudioSeal).

12 new unit tests + 2 converter tests; 63 lib tests total green.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>
 2026-04-25 19:26:13 -07:00