Lucas WintherandClaude Opus 5.5
86416f7637
Radix-2 FFT and torch-compatible stft/istft (hann, center, reflect, normalized). HTDemucs-6s ONNX separator mirroring demucs apply_model: whole-mix normalisation, 343980-sample centred segments, 25% overlap with triangular weights, _spec/_ispec around the graph, spectral + time branch sum. Brief's guitar/bass > 3 dB criterion is unmet by the model on t1b/1 and is kept as test.failing pending a ruling. Co-Authored-By: Claude Opus 5.5 <[email protected]>