[Fwd: Re: RES: [sdiy] Synthacon/Steiner-Parker VCF inputs]

[Derek Holzer]

Hi Cynthia,

Cynthia Webster wrote:
> I'm not sure about the phase relationships, interesting question.
> (Don't think anyone has asked before, but I haven't noticed any phase 
> cancellation per se,
> so assume all in the same phase, (hey that's what inverters are for 
> right?).

OK, so it doesn't function like other filters where the LP or BP can be 
out of phase with the HP for example. That's what I wanted to know. 
(@Adam: sorry if the original wording of the question didn't express 
that clearly, it might have been late when I wrote it.)

> The All Pass input only acts as a phase shifter when the original input 
> signal is mixed with the output
> which requires a separate mixer though.

That's handy to know! Good trick, that.

Best!
D.

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