Lowpass Filter

About

This was implemented using Matlab's Filter designer to get the coefficients, these coefficients were then implemented through 2 methods, one is through the use of a standard difference equation to allocate the correct magnitude samples to the output, and the other is a circular buffer where we rotate between pointers to allocate samples thus saving the number of clock cycles executed.

Results
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Passband

It can be seen that blue sinusoid (sinusoid with filter applied) does not change in the pass band region (0-10kHz)

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Stop Band
The signal is cut off completely when the frequency is changed to 15 Khz.

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