Re: [SoX-users] Bode plot from wav file

[Martin G. <mar...@gm...>]

On 17/12/2015, Bengt Nilsson <bni...@gm...> wrote:
> Ok, default ”-n spectrogram" is not quite what I want.
> It will give me a png with time progress with color/intensity for amplitude.
> I would like a bode plot dB vs. Log(F).

Dunno about a bode plot, but to create log(F) spectrograms I had to
wrap "sox -n spectrogram -r" or "sndfile-spectrogram" (in package
sndfile-tools) in a shell script that uses an imagemagick script to
distort the output like this: wikidelia.net/wiki/Spectrogram

To use my script you need a modified version of sndfile-spectrogram
(or the latest version from git) and the shell script is not so
user-friendly. However, if it's suitable for what you want to do I can
send you them.

The only tool I've seen that has log(F) spectrograms built-in is Audacity.

    M