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Re: Waterfall Plot in Octave
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From: |
Mike Miller |
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Subject: |
Re: Waterfall Plot in Octave |
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Date: |
Mon, 22 Apr 2013 22:33:00 -0400 |
On Mon, Apr 22, 2013 at 10:41 AM, scigeek wrote:
> Can anyone provide some help/suggestions with how to get a waterfall plot in
> Octave ?
Do you mean something like this?
[x, Fs] = wavread ("/usr/share/sounds/alsa/Front_Left.wav");
nfft = 128;
[S, f, t] = specgram (x, nfft, Fs);
ff = f' * ones (1, length (t));
tt = ones (length (f), 1) * t;
surf (ff, tt, 20*log10 (abs (S)))
HTH,
--
mike