Not because the code was bad, even though it could use some indenting, but because I did not understand how it achieves its purpose. That is why I decided to read his code, to be certain of my good understanding of it.Īnd that is the exact moment I entered an infinite spiral. The instructable does a great job at explaining the big ideas behind it, with not only appropriate, but also good-looking illustrations. It is part of a series of instructables on implementing the FFT on Arduino, and this is his fastest accurate implementation. Let's start with the obvious: abhilash_patel's instructable is a Great instructable. So what changed my mind ? Because I did not know how to implement the FFT. Implementing fixed-point FFT for longer inputsĪs I said in the introduction, I explicitly researched an implementation of the FFT because I did not want to implement my own.How fixed-point arithmetic came to the rescue.A first dummy implementation of the FFT.
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