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Spectrogram

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Spectrogram

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04 Feb 2014 (Updated )

This exercise plots wideband and narrowband speech spectrograms for a user-designated speech file.

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Description

The sound spectrogram is one of the most fundamental tools of digital speech processing. The sound spectrogram of a speech file is an image map of the sequence of short-time log (or linear) spectrums, where each spectrum is obtained from an STFT analysis of a frame of speech, and subsequent spectrums are obtained from STFT analyses of subsequent, highly overlapped in time, frames of speech. Thus the sound spectrogram is a two-dimensional (image) plot of speech spectral information (linear or log magnitude) over the duration of the speech signal.

Required Products MATLAB
MATLAB release MATLAB 8.0 (R2012b)
Other requirements Requires functions and speech files folder to work properly.
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Updates
28 Feb 2014

recording fs set to 16000 Hz

03 Mar 2014

changed GUI start-up parameters

18 Apr 2014

code updates; Read_Me.txt setup file; pathnew_matlab_central example

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