Gabriel Maldonado wrote:

> I noticed that the same problem is presente even in the plucked string model. Probably it
> depends by the fact that the delay of the filter  is still non-fractional. For example,
> when no filter is present in the string model, the pitch of high notes is OK. I suppose
> (but I'm not sure) that also filter coefficients should change when changing pitch.

The correct way should be changing appropiately the delay line when changing the pitch *or*
the filter coeff. (to make the sound brighter or duller). A onepole lowpass filter doesn´t
cause a group delay bigger than 1 sample, am I wrong? so its effect is as much bigger as the
possibly non-fractional delay of the delay line.Btw, wouldn´t higher notes be more sensitive
to pitch differences than lower ones?

Thancks for all.

Josep M Comajuncosas