Damian Peckett has a great blog post that investigates how to detect the beat or tempo of music with an Arduino. Damian talks about a few different approaches using analog filters, simple digital thresholding, and more advanced detection in the frequency domain using Fourier analysis. Ultimately he settled on a few digital filters and thresholding to pick out the peaks of bass music thumps. Check out the post for more information and a few videos of it in action–great work!
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