DSP System Toolbox example returns error as not able to find the DSP Systems Toolbox; please let me know how to fix it.

Although I do have installed licensed DSP systems toolbox (see the very bottom of this), the example in LiveScript code: "Introduction to Streaming Signal Processing in MATLAB" gives me an error when calling filterAnalyzer(NotchFilter)

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filterAnalyzer(NotchFilter);

Error using signal.internal.filteranalysis.parsers.parseFilterObject

DSP System Toolbox is required to analyze filter input 1.

Error in signal.internal.filteranalysis.parsers.parseFilters

Error in filterAnalyzer (line 230)

[filtArray,warningIDs,warningMsgs,parsedSettings] = signal.internal.filteranalysis.parsers.parseFilters(filters,parsedSettings);"

My VER gives:

MATLAB Version: 24.2.0.2773142 (R2024b) Update 2

MATLAB License Number: 4XXXXXXXX

Operating System: Microsoft Windows 11 Home Version 10.0 (Build 26100)

Java Version: Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode

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MATLAB Version 24.2 (R2024b)

DSP System Toolbox Version 24.2 (R2024b)

Signal Processing Toolbox Version 24.2 (R2024b)

Answer 1

[Govind KM]

Hi @Vladimir,

It is possible that the DSP System Toolbox directories have not been included in your MATLAB path. The following commands can be used to restore the default path:

restoredefaultpath;
rehash toolboxcache;
savepath;

You can make sure that the DSP System Toolbox directories are on the MATLAB path using the command:

pathtool

Additionally, the following command can be used to check if there is an issue with your license:

license('test', 'Symbolic_Toolbox');

If this command returns 0, there could be an issue with your license. If so, you can try running the following command in to diagnose the issue:

[status, errmsg] = license('checkout', 'Signal_Blocks')

Kindly refer to the documentation pages for more information on these commands:

• restoredefaultpath: https://www.mathworks.com/help/releases/R2024b/matlab/ref/restoredefaultpath.html
• rehash: https://www.mathworks.com/help/releases/R2024b/matlab/ref/rehash.html
• pathtool: https://www.mathworks.com/help/releases/R2024b/matlab/ref/pathtool.html
• license: https://www.mathworks.com/help/releases/R2024b/matlab/ref/license.html

Hope this helps!