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Allpass?

Posted: Tue Feb 21, 2017 11:34 pm
by SawZer
Hey Nightradio, I was looking at your mono phaser, and when I saw there was only one pole (one allpass), I was going to come on the forum to say you need at least one more pole to get a notch. Then I played it. Why does the single allpass create a notch? I thought one allpass offset the phase by only 90 degrees?

Re: Allpass?

Posted: Tue Feb 21, 2017 11:38 pm
by SawZer
After more testing it seems like the standard allpass filter has 2 poles baked in. Interesting