I posted the details of myquestions earlier but no help. Maybe I need to rephrase it.(adsbygoogle = window.adsbygoogle || []).push({});

I basically generated a square wave and added noise to it using Matlab.

The question is how do I design a filter to reduce as much noise as possible to retain most of the square wave. The SNR is OdB.

Thanks in advance

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# Filter design

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