How to generate a file, including the frequency spectrum of the wav / riff sound file? I would like to use the linux command line.
I know a cool sox function to create png spectral diagrams
sox sound.wav -n spectrogram
But I do not need a visual representation of the frequency spectrum. I just want to get the frequency spectrum in the data file so that I can work on them. I believe there should be an option using sox. Sox needs to generate this data before its graphics. How to get it?
Not sure, maybe the second solution exports the wav file to a dat file. Each sample from the dat file is a measure of the position of the membrane at a time. So this is not a frequency spectrum.
sox sound.wav file.dat
How to convert these membrane positions to the spectrum that I need?
Thank.