Feedback in FM synthesis

[Martin Czech]

Yes, output back to input. Thsi should be 
equivalent to a inifinite chain of operators,
all with the same settings. So the output is harmonic
with all harmonics present, that is likely to be
sawish.

You did not give the actual formulas, so it is hard
to tell why things do not work.

Is the sample rate high enough?
Feedback causes a lot of high frequency energy, this
causes alias problems. Lots of feedback will finaly give noise.

FM synths therefore run
at pretty high sample rates 60kHz +.
But it is not very likely that this is your
problem.


m.c.