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Spectrogram

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Be the first to rate this file! 66 Downloads (last 30 days) File Size: 2.95 MB File ID: #45386 Version: 1.4
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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 8.5 (R2015a)
MATLAB Search Path
/
/functions_lrr
Other requirements Requires functions and speech files folder to work properly.
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Updates
28 Feb 2014 1.1

recording fs set to 16000 Hz

03 Mar 2014 1.2

changed GUI start-up parameters

18 Apr 2014 1.3

code updates; Read_Me.txt setup file; pathnew_matlab_central example

03 Jun 2015 1.4

Updated to work with post-R2014b graphics

25 Jun 2015 1.4

Added dependencies (highpass_filter_signal)

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