Audio Beat Detect ?« Electronic Product Design


Posted on Feb 6, 2014

This circuit uses a digital pot to allow the microcontoller to automatically adjust the gain of the circuit to suit the ambient audio volume, but you could replace this with a standard pot if this isn`t needed. The low pass filter is a copy of Graham Mitchell`s nifty solution from this page:


Audio Beat Detect ?« Electronic Product Design
Click here to download the full size of the above Circuit.




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