fons adriaensen :
> There are certainly instruments that produce sound well
Still don't understand the non-linear part here :/
I make 2 audio files with 400 and 500 hz sine tones and play
them along (out of ardour). There is clearly audible beat
frequency, a 100 hz hum and harmonics of that. Checked with
jaaa: Adding a 99 hz tone to the mix results in another 1 hz
and there seems to be no reference to non-linearities that
would be crucial for the phenomenon to come up.
I seem to be missing something obvious and maybe you can throw
another much appreciated explanation at me?