espnet2.layers.augmentation.lowpass_filtering

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espnet2.layers.augmentation.lowpass_filtering(waveform, sample_rate: int, cutoff_freq: int = 1000, Q: float = 0.707)

Lowpass filter the input signal.

• Parameters:
  • waveform (torch.Tensor) – audio signal (…, time)
  • sample_rate (int) – sampling rate in Hz
  • cutoff_freq (int) – filter cutoff frequency
  • Q (float or torch.Tensor) – https://en.wikipedia.org/wiki/Q_factor
• Returns: filtered signal (…, time)
• Return type: ret (torch.Tensor)