I know the cool function allowing me to produce nice looking png spectrograms but what about the data file including spectrum of frequencies? That would be really useful, so I can use those data for future work .
Probably, Sox already must have this function to generate data before plotting a spectrogram. Just make it public please. Thanks & just donated.
Just instead of
sox sound.wav -n spectrogram
I would like to be able to do:
sox sound.wav -n spectrum_of_frequencies
It should produce simple txt/csv or dat file