Trying to have the illusion of playing two tones at once

Projects Programming
41

yes - this is useful in math when you have limits approaching 0 from the negative or positive side, a way to represent the mathematical 0+ or 0-

42

I'm late to the discussion, but you can output two sine waves simultaneously on one Arduino pin by following a sine wave table in different steps, and just adding the values together. It duplicates the waveform produced by two mixed tones. That's how an Arduino can generate DTMF. But of course it's a lot more complicated than the tone library.

43

Never too late to mention

https://docs.arduino.cc/libraries/mozzi/

It's fun to do by simple code, too.

Any such works benefits from using a real digital to analog converter.

a7

44

That makes sense! Wasn't something I thought about, so thank you for the advice!