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I am pretty new to Matlab and am trying to reduce the noise of a particular signal. I found this pdf online and found it to be helpful. However, I am having trouble figuring out what the freq=(0:79)/(2*n*dt) means. More specifically the 0:79 bit. Any help would be much appreciated.

Referring to: http://www.math.uic.edu/~jan/mcs320s07/matlec7.pdf

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# Signal Processing

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