Nice work! I always love a good PWM square wave!
I have designed a CPU replacement for the Poly-800 based on the STM32 F4. I have the board designed but not built or tested yet. It will replace the HAWK kit completely.
It is not yet designed to do any tone generation. But once I get into it, I plan on replacing the MSM5232 with another STM32 F4 board as well. And that will definitely be producing sound and will have digital filters as well.
I like what you're doing and maybe you would like to do the sound board for the Poly? You obviously have the technical chops for it.
On Fri, 2018-12-07 at 02:35 +0000, bperkins211@... [korgpolyex] wrote:
Curious if anyone else has dabbled with attempts to create a synth using a uC like STM32's.There was discussion about it many moons ago, but things got quiet about it as time went on..I just started learning how to dabble a bit with the ST micros and so far have managed to make a little noise with them:A simple Pulse Wave sound using a "BluePill".Best heard with some good bassy speakers-A early DAC Saw Wave experiement using a F407VET6..https://www.youtube.com/watch?v=_jDU2ayUkHs&t=13s