Analogue systems

> Sorry if my last post was unclear but I just re-read your message and
> I get it now.

Don't be sorry. I know how poor is my english and I think that I'm not
always very clear.

> The multimode filter in this case, is being used as a sine wave
> oscillator. There is no VCO in the line up - just the output from the
> filter going into the comb filter.

You mean that you use the multimode filter as a vco !?! How can you do
that ?

Arnauld