espnet2.layers.augmentation.contrast

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espnet2.layers.augmentation.contrast(waveform, sample_rate: int = 16000, enhancement_amount: float = 75.0)

Apply contrast effect to the input signal to make it sound louder.

• Parameters:
  • waveform (torch.Tensor) – audio signal (…, time)
  • sample_rate (int) – sampling rate in Hz (not used)
  • enhancement_amount (float) – controls the amount of the enhancement Allowed range of values for enhancement_amount : 0-100 Note that enhancement_amount = 0 still gives a significant contrast enhancement.
• Returns: filtered signal (…, time)
• Return type: ret (torch.Tensor)