[linux-audio-user] Histogram

[Dmitry Baikov]

> For some research on musical recordings I need a software that is able
> to generate a graphical histogram (or a CSV table) out of an audio file.
> I need the dB on the x-axis and the frequency distribution on the y-axis.

This is called spectrogram. It looks like histogram but it is not it.
Search for FFT, Fast Fourier Transform.

Look at Mammut, it said to do one gigantic FFT of all input data (no windows).
http://www.notam02.no/arkiv/sgi/mammut.tar.gz

I haven't used it, though.

Regards,
Dmitry.