Signal clip detection

The A to Synth blog looks into circuitry for signal clipping detection:

I want to detect when the signal on the mix bus is about to clip, to be able to indicate it in the UI.

I initially intended to use the Elliot Sound Products clip detection circuit to do bipolar detection (above).

By replacing the op amps with LM311 comparators, and the op amp-based latch with a real latch, CD4043, things work fine all the way up to 20kHz+.

he CD4043 is driven from a 3v3/GND PSU, so level shifting is not necessary (for microcontrollers).

See the circuit ultimately used in the post here.


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