pytorch
2c258d91 - Fix torch.istft length mismatch and window runtime error (#63469)

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3 years ago
Fix torch.istft length mismatch and window runtime error (#63469) Summary: The PR fixes two issues: - See https://github.com/pytorch/pytorch/issues/62747 and https://github.com/pytorch/audio/issues/1409. The length mismatch when the given ``length`` parameter is longer than expected. Add padding logic in consistent with librosa. - See https://github.com/pytorch/pytorch/issues/62323. The current implementations checks if the min value of window_envelop.abs() is greater than zero. In librosa they normalize the signal on non-zero values by indexing. Like ``` approx_nonzero_indices = ifft_window_sum > util.tiny(ifft_window_sum) y[approx_nonzero_indices] /= ifft_window_sum[approx_nonzero_indices] ``` Pull Request resolved: https://github.com/pytorch/pytorch/pull/63469 Reviewed By: fmassa Differential Revision: D30695827 Pulled By: nateanl fbshipit-source-id: d034e53f0d65b3fd1dbd150c9c5acf3faf25a164
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