Hi there, I'm also curious about this issue
If it's possible to create EQs or filters on Arduino boards, that's AMAZING cuz u can even load the frequency characteristics of a 4x12 guitar cabinet or a Celestion speaker and turn it into a CABINET EMULATOR !!!!!!!(which is a treasure for "bedroom guitarists") Furthermore, generate a white noise at the output, send it to an amp, collect the output sound pattern from the amp by using a reference-level RTA testing microphone connected to the input of the pedal (48-volt bias power might be required, but that's just a minor problem which could be fixed via a phantom box ), and analyze the signal and then load this pattern into the Arduino Cab Sim... It's actually like a Bias Amp's Matching System or a Kemper Profiler's Profiling system. Would it be great?
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Check the Mozzi Library, it is (kind of) compatible with the pedal. Here's a couple of tests I made, I don't remember how good or bad it was however, it's been a little while. These should be the ones I had better results with...