zonos3/codec/SOURCE.md

Provenance of zonos3.codec

Vendored from the s1_s2_dac codec package of the release codec opus_dual_3n_600k_sched600k_r4096_step600000.

• P = /data/groups/audio/gabriel/s1_s2_dac/downstream/campaigns/opus_dual_finished_50k_20260912/packages/3n_600k_sched600k_r4096/source
• R = /data/groups/audio/gabriel/s1_s2_dac

File	Source
codec_adapter.py	bingua2 minisgl/vendor/dual_codec_adapter/codec_adapter.py (f543d63)
resample_exact.py	P/resample_exact.py
istft_head_a_20261002/{__init__,model}.py	R/istft_head_a_20261002/
hybrid10_dual_encoding/{__init__,base_model,inference,model}.py	P/hybrid10_dual_encoding/
s1dac/{__init__,losses}.py	P/s1dac/
s1dac/vendor/{__init__,modded_dac,rvq}.py	P/s1dac/vendor/
s1dac/same_data/npy_ogg_dataset.py	P/s1dac/same_data/npy_ogg_dataset.py L48-51 (_cached_resampler) and L85-118 (Wav2Vec2BertFeaturePreprocessor), verbatim
data_processing/{independent_batcher,torch_utils}.py	P/data_processing/

Changes

• Every import of data_processing, resample_exact, hybrid10_dual_encoding and s1dac is rewritten to zonos3.codec.*; the runtime no longer puts codec directories on sys.path.
• s1dac/same_data/npy_ogg_dataset.py keeps only the W2V-BERT preprocessor; the torchcodec/ctypes dataset code is not used at inference. s1dac/same_data/__init__.py is empty.
• data_processing/__init__.py holds a docstring only (no raw_audio_dataloader import, no __getattr__).
• s1dac/losses.py keeps only SemanticTeacher and average_ssl_frames (the training losses are not used at inference).
• s1dac/vendor/modded_dac.py DecoderBlock no longer builds the transformer it never used (its nn.Sequential always had it commented out).
• codec_adapter.py (MossAutoencoder):
  • takes the generator checkpoint, SSL teacher dir, step, codebook sizes, codec name, checkpoint sha256 and device as keyword arguments (tokenizer/dual_reference.py fills them from the codec registry) instead of reading the package's checkpoints/hybrid_10cb.json receipt; the device is no longer hardcoded to cuda:0;
  • drops ROOT, add_arguments and create_autoencoder;
  • drops the real-audio validation on audio_examples.pt (not released) and the checks/ report file; the random warm-up graph/native agreement checks stay;
  • metadata() reports ssl_teacher (the teacher dir) instead of the package's teacher.sha256 manifest.