@ptrblck Thanks for the reply;
I tried that too… but can’t get it work

image.png795×220 8.61 KB

transform = torchaudio.transforms.DownmixMono(channels_first=True) __init__() got an unexpected keyword argument 'channels_first'
Just to add up; I downloaded torchaudio as follows:
!git clone https://github.com/pytorch/audio.git
os.chdir("audio")
!git checkout 301e2e9
!python setup.py install