[sdiy] why 10V

[jhaible]

> > Next question: If you run a +/-5V audio signal thru a chain
> > of N unity-gain all pass filters, what will be your worst
> > case maximum level at the end of the chain ?
>
> It can certainly exceed the +-5V, simply because the delays are unequal
> for the frequencies (dispersion), so a pulse can be shaped into
> something with a higher peak.

This is what I know. But what I don't know is what the maximum level
after N stages of 1pole/1zero APFs with arbitrary pole frequencies
can be. Anybody has a formula for this?

JH.