nnAudio.utils.downsampling_by_2¶
- nnAudio.utils.downsampling_by_2(x, filterKernel)¶
A helper function that downsamples the audio by half. It is used in CQT2010 and CQT2010v2
- Parameters
x (torch.Tensor) – The input waveform in
torch.Tensortype with shape(batch, 1, len_audio)filterKernel (str) – Filter kernel in
torch.Tensortype with shape(1, 1, len_kernel)
- Returns
The downsampled waveform
- Return type
torch.Tensor
Examples
>>> x_down = downsampling_by_2(x, filterKernel)