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Support batch-dimension in log_mel_spectogram (#839)

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Markus Hennerbichler 2023-01-17 07:46:15 +00:00 committed by GitHub
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whisper/audio.py
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@ -113,7 +113,7 @@ def log_mel_spectrogram(audio: Union[str, np.ndarray, torch.Tensor], n_mels: int
window = torch.hann_window(N_FFT).to(audio.device)
stft = torch.stft(audio, N_FFT, HOP_LENGTH, window=window, return_complex=True)
magnitudes = stft[:, :-1].abs() ** 2
magnitudes = stft[..., :-1].abs() ** 2
filters = mel_filters(audio.device, n_mels)
mel_spec = filters @ magnitudes