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I Exported HT-Demucs FT to ONNX in 2026 (4 Blockers Everyone Else Gave Up On)

First working ONNX export of htdemucs_ft — defeating complex64 STFT, fractions.Fraction, random.randrange, and aten::_native_multi_head_attention. Verified parity, 1.31× faster on CPU.

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giovedì 21 maggio 2026·dev.to
I Exported HT-Demucs FT to ONNX in 2026 (4 Blockers Everyone Else Gave Up On)
First working ONNX export of htdemucs_ft — defeating complex64 STFT, fractions.Fraction, random.randrange, and aten::_native_multi_head_attention. Verified parity, 1.31× faster on…