#237 AudioDSP/Distortion

AudioDSP simple distortion effect based on the pedalSHIELD.

Here’s an example of the effect on a 1kHz 200mV signal at about mid-level clipping:

waveform

Notes

Distortion.ino is a simple distortion effect from the pedalSHIELD examples. The pushbuttons control the distortion clipping level up and down.

Core algorithm:

input value is simply clipped by the distortion level set by the push-buttons

Performance

Not bad, but a fairly crude fuzz effect. There’s a bit too much high frequency buzz in the result due to the hard clipping. See SuperCrunch for what I think is a bettery fuzz.

AudioDspDriver Library

This example uses a private AudioDspDriver library that contains my refactoring of the core algorithms for driving the board. I may split this out as a stand-alone library at some point.

Construction

Breadboard

The Schematic

The Build

Credits and References