torchaudio: how to frame and append long wav files using different durations?
e.g., I have 40G of 100,000 wav files (5 labels) with different length.

I wish to do 2, 3 and 4 durations of frames among these labels. Append the frames (I do not want miss the file)
How to append them without save to my disk >> 100,000 files?