I'm using MATLAB 2008, and I have looked at some tutorials online about a Butterworth filter. Does MATLAB 2008 have this function?
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It does not seem to have it since I typed 'help butter' into the command window and it said function not found. Is there another way to use a butterworth filter in 2008 rather than get a new version of MATLAB?
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Thomas
on 11 Jul 2012
Edited: Thomas
on 11 Jul 2012
The Butterworth IIR filter design using specification object function 'butter' is not part of MATLAB core but the Signal processing toolbox (IF I remember it right)
You need to have the toolbox to use the ver function
>> ver
to see what toolboxes you have installed.
If you have the signal processing toolbox then you might want to see if it can find the function
>> which butter
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