Speech Spectrogram

High quality speech spectrogram plot generation routine

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.

• MATLAB release: MATLAB 7.10 (2010a)

[Alecsander Eitan]

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

[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