I looked through the manual for that multipliers each operator have for FM ratios and all I found was that–
C - Mostly integers because it’s always a carrier
A - Lots of stuff because it’s a modulator
B - B1 and B2 move together like the hands on a clock up to 16 (what?)
Can anyone with a Digitone help me out with a list? It all sounds really interesting, but vague.