A few Questions - STM32F407VET6

[TheZothar]

Great Work!

I'm hoping you can shed some light on a couple things. I'm trying to use the STM32F407VET6 board I got off Amazon.com. It has a microSD card and I was hoping to play audio off of the card and modulate to 40khz carrier. In main.cpp you have PWM_OVERFLOW set to 1800 for the 72Mhz clock. I believe the STM32F407VET6 is 168mhz. Is it simply a matter of changing it to 4200?

I need to do some more research on the form that the ADC data comes back as to then fill with decoded wav or mp3 data. Do you know of any good libraries for the STM32 that handle Audio decode?

Any help would be greatly appreciated. Trying to make a device with a few predone sounds (knocking door, whispers, etc..) for holloween. Already built the SonicSurface (https://www.instructables.com/SonicSurface-Phased-array-for-Levitation-Mid-air-T/) for writing messages on a dusty table. :)