spectrogram error in matlab

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Matilda - 2021-02-12T10:05:56+00:00
Question: spectrogram error in matlab

Hello, I am trying to plot a spectrogram using MATLAB at home but I am getting the following error:   Undefined function 'spectrogram' for input arguments of type 'double'.

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    • Expert Answer

    Profile picture of Prashant Kumar Prashant Kumar answered . 2025-11-20

    Use ver to see if you have the Signal Processing Toolbox. If you don't contact the sales department.
     
     
    >> ver
------------------------------------------------------------------------
MATLAB Version: 8.5.0.197613 (R2015a)
MATLAB License Number: ******
Operating System: Microsoft Windows 7 Enterprise  Version 6.1 (Build 7601: Service Pack 1)
Java Version: Java 1.7.0_60-b19 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
-----------------------------------------------------------------------
MATLAB                                                Version 8.5        (R2015a)
Signal Processing Toolbox                             Version 7.0        (R2015a)
    If you have it, "which" should show this:
     
     
    >> which spectrogram
C:\Program Files\MATLAB\R2015a\toolbox\signal\signal\spectrogram.m


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