[sdiy] BLIT/BLEP virtual analogue synthesis

[Olivier Gillet]

> I might be wrong about it, but the sawtooth 8kHz + sawtooth 8.02kHz
> sounds like a 8.01kHz fundamental with a 20 Hz AM rate, a 16.02kHz
> harmonic with a 40 Hz AM rate, a 24.03kHz harmonic with a 60 Hz AM
> rate, etc... and if the bandwidth is smaller than 16kHz (being the
> restriction coming from sr < 32kHz, or the limitations of your ears),
> only the beating fundamental is heard, just like with BL synthesis.

(AM rates are halved).

I did the test and can hear the beating of two sine waves outside of
my audible range. Interesting!

But now I have bad (BL) tinnitus, so no more 8kHz experiments for tonight.