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Speech Spectrogram

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4.3 | 3 ratings Rate this file 33 Downloads (last 30 days) File Size: 2.8 MB File ID: #29596 Version: 1.0
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Speech Spectrogram

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High quality speech spectrogram plot generation routine

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Description

Takes a vector containing audio data samples as an input, computes short-time Fourier transform (STFT) and plots the STFT power spectrum trajectories across time.

Acknowledgements

M Code La Te X Package inspired this file.

This file inspired Analysis Modification Synthesis, Phase Spectrum Compensation, Add Noise, and Ideal Binary Mask.

MATLAB release MATLAB 7.10 (R2010a)
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Comments and Ratings (4)
09 Dec 2013 Sha

Sha (view profile)

Hi, How do you choose the vector of spectrogram limits?

02 Oct 2013 gbernardi

gbernardi (view profile)

I really like the visual result of your function. I have a question, though:
where does that black dots grid-like superimposed to the spectrograms come from?

10 Apr 2011 Kamil Wojcicki

Hi Alecsander, you can pass color map as one of the inputs to the myspectrogram method. In the test_myspectrogram.m try, f.e.,

myspectrogram( speech.(method), fs, [22 1], @hamming, 2048, [-59 -1], false, 'hot', false, 'per' );

Alternatively you can specify color map for the current figure after calling the myspectrogram method, e.g.,

myspectrogram( speech.(method), fs );
colormap hot;
%colormap jet;

See also http://www.mathworks.com/help/techdoc/ref/colormap.html

Comment only
01 Apr 2011 Alecsander Eitan

Very nice and works well.
I'll appreciate if it could support color spectrogram.

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