MATLAB: Digital signal processing. [need help]

digital signal processingdsp

Hello everybody. I have given an assignment and I just need little help. In my assignment I have to get audio signal from microphone and show it's response in digital frequency domain. I'm getting signal from microphone in matlab but don't know how to convert into digital domain. Thanks in advance.

Best Answer

If your audio signal is in MATLAB (perhaps using audiorecorder and its friends) it is already a digital signal. Pay specific attention to the sampling frequency ‘Fs’, and the class of the data, since you may need to cast the data as double to process it if it not already a double array.

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MATLAB: Digital filters

Hi Kim,

Do you have access to the Signal Processing Toolbox in MATLAB? If so, you can use the fdatool to design the filter very easily.

For more information:

doc fdatool

HTH.

Rick

MATLAB: Digital filters

Where do you actually have the ellipsis, is it at a line break?

d = fdesign.lowpass;
Hd = design(d,'allfir');
H = dfilt.parallel(Hd(1),Hd(2),...
Hd(3));

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MATLAB: Digital filters

MATLAB: Digital filters

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