MATLAB code for Butterworth filter having sound as a input signal

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GITS Dabok
GITS Dabok le 28 Jan 2011
sir! kindly send me the MATLAB code for digital butterworth filter having sound as a input signal.. Thanking you.
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Jan
Jan le 28 Jan 2011
Answers is not a "do it for me" platform. If you explain your specific problem, you will get specific help.

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Drew Weymouth
Drew Weymouth le 11 Nov 2011
MATLAB has a built in function butter in the Signal Processing Toolbox that will return coefficients for a Butterworth high- or lowpass filter. Type help butter in the command window. Once you have coefficients, use filter ("standard" filtering) or filtfilt (zero-phase) to perform the filtering.
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Jan
Jan le 11 Nov 2011
The solution is correct. I do no think, that GITS will still need this after 10 months, but for other readers it can be useful.

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