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Spectrogram

version 1.4 (2.95 MB) by

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

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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.

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Updates

1.4

Added dependencies (highpass_filter_signal)

1.4

Updated to work with post-R2014b graphics

1.3

code updates; Read_Me.txt setup file; pathnew_matlab_central example

1.2

changed GUI start-up parameters

1.1

recording fs set to 16000 Hz

MATLAB Release
MATLAB 8.5 (R2015a)

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