Considering transforms in torchaudio, is window length etc. in audio frames or milliseconds
I am preprocessing audio recordings using torchaudio. The documentation lists win_length (int) – Window size. (Default: n_fft) Does this value, which defaults to 400, represent the window length in frames or milliseconds? 

The n_fft variable is used in the Spectrogram class. And it's forward function documentation mentions 


  where n_fft is the number of Fourier bins

