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What are state variable filters?

Posted: Sat Jun 13, 2015 12:47 pm
by unfa
I've stumbled upon them when using ZynAddSubFX.

I tried searching the web many times to find some information about state variable filters, but I failed.

What's the deal?

Re: What are state variable filters?

Posted: Sun Jul 05, 2015 4:56 pm
by faraway1nspace
I'd also like to know about this.

Re: What are state variable filters?

Posted: Mon Jul 06, 2015 6:11 pm
by ssj71
Basically its a filter that gives you 3 outputs at the same time, a highpass, lowpass and bandpass filter. So in a way you get 3 filters for the processing cost of 1. You can mix or process the 3 outputs in different ways. I haven't used them in zyn so I'm not sure how it exposes them. Rakarrack's mutron and echotron let you blend all the outputs however you want.

Re: What are state variable filters?

Posted: Wed Jul 08, 2015 7:24 am
by briandc
Hi unfa!
I started a discussion about state variable filters here and got some interesting feedback for you:
http://www.vintagesynth.com/forum/viewt ... =1&t=80315


brian