Transform Change Sampling Rate

transform_resample.py

  # ----------------------------
  # Since Resample applies to a single channel, we resample one channel at a time
  # ----------------------------
  @staticmethod
  def resample(aud, newsr):
    sig, sr = aud

    if (sr == newsr):
      # Nothing to do
      return aud

    num_channels = sig.shape[0]
    # Resample first channel
    resig = torchaudio.transforms.Resample(sr, newsr)(sig[:1,:])
    if (num_channels > 1):
      # Resample the second channel and merge both channels
      retwo = torchaudio.transforms.Resample(sr, newsr)(sig[1:,:])
      resig = torch.cat([resig, retwo])

    return ((resig, newsr))