From my understanding the Line 6 Helix uses two 450MHz SHARC processors, ADSP-21469. Other effect/amp modelers use more or newer of the same family[0]. Can anyone comment about the relative processing power of a RPi vs the market solutions? Is the RPi theoretically good enough that a pedalboard could be completely modelled? [0] Interestingly, it sounds like SHARC chips were designed to be low cost processors for sing…
Generally this type of work is done on DSPs and FPGAs, because they can generally get much lower latency than a CPU. While this can get latency low enough that nobody will notice, it is still there, and there isn't room for anything else in your signal chain to also have latency and still be unnoticed. They will still have a CPU on devices like this, but all it does is run the UI, the sound processing is not done on…
Re: A low latency guitar effects processor suitable for running on a Raspberry Pi
#141Why would a DSP be able to get lower latency that a modern general purpose processor? DSPs might have been a thing 15 or 20 years or 30 years ago; but I cannot imagine anything that a DSP would do better than a modern ARM processor.