Spectrogram

Version 1.4.0.0 (2.95 MB) by Speech Processing
This exercise plots wideband and narrowband speech spectrograms for a user-designated speech file.
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Updated 25 Jun 2015

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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.

Cite As

Speech Processing (2026). Spectrogram (https://www.mathworks.com/matlabcentral/fileexchange/45386-spectrogram), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2015a
Compatible with any release
Platform Compatibility
Windows macOS Linux
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functions_lrr/

Version Published Release Notes
1.4.0.0

Updated to work with post-R2014b graphics
Added dependencies (highpass_filter_signal)
1.3.0.0

code updates; Read_Me.txt setup file; pathnew_matlab_central example
1.2.0.0

changed GUI start-up parameters
1.1.0.0

recording fs set to 16000 Hz
1.0.0.0