Hi,

Lately I've been playing around with an oscil which is being fm-ed by
itself.

like this:
a1  init    0
a1 oscili 1, kfreq+a1*(kfb*kfreq), 1

where kfb is the amount of feedback and sr = kr.

The problem is, when I increase the feedback the frequency goes down. So
I should probably increase kfreq by some factor if I increase  kfb. But
how much? How could I calculate kfreq so that the resulting frequency
stays the same if I increase kfb?
Can anyone help?

thnaks,
Fokke de Jong.