[linux-audio-user] Histogram

Markus Herhoffer markus at herhoffer.net
Fri Jul 28 11:36:49 EDT 2006


Well, I've written frequency distribution but I meant level
distribution. So I think "histogram" is the right term.

Markus

Dmitry Baikov wrote:
>> 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.




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