Hi,
Just reporting here something that has been said on the forum: when playing a simple oscillator at a given frequency on an AVR board, the output is slightly off, to be precise it is too low by 0.25% from my tests.

This is not a lot, but it is hearable when playing when other very in-tune digital instruments.

Looking at the timer for AVR source code:

Timer1.initializeCPUCycles( F_CPU / AUDIO_RATE,

should only be off by (16e6/32768 - int(16e6/32768))/32768 = 0.0576%, five times less!

So if anyone has an idea!