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self-oscillating filter
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atxbigballer1
self-oscillating filters?
what patches do u use a self-oscillating filter in?
Thanks
IceColdWater
self-oscillating filters? You mean like a LFO?
tehlord
Comb filters can self oscillate right?

I think :conf:


Anyhoo, they're good for bells and such.
MrJiveBoJingles
Mostly weird pitchy sounds, since a self-oscillating lowpass filter just produces a sine wave that moves up and down in pitch with the filter cutoff.

Here are a couple examples with Moog:

http://jbj.raceriv.com/sounds/phattyselfosc1.mp3
http://jbj.raceriv.com/sounds/lpselfosc.mp3

[Edit: I used distortion and audio-rate LFO in some parts, which can give you more than just sine waves.]
MrJiveBoJingles
Comb filters can self-oscillate, too, although I have never used a self-oscillating comb:

http://www.analoguesystems.co.uk/modules/rs120.htm
Fledz
Is it wrong that I have no idea what you mean when you say "self-oscillating filter"?
MrJiveBoJingles
Self-oscillating filter means that the resonance is set so high that the filter will produce a tone on its own, without any help from normal VCOs. The tone's pitch depends on the filter cutoff.
MrJiveBoJingles
Self-oscillation plus ring modulator will get you that pitchy sound from Deelite - "Groove Is In The Heart":

http://www.youtube.com/watch?v=C4D1HSL7P98 (sound plays at about 1:20)
http://jbj.raceriv.com/sounds/deelite.mp3

LOL. :D
atxbigballer1
Thanks for your help MrJiveBoJingles!
I am trying to learn my synth.
user19503
Thor has it, i cant tell what it does.

Zombie0729
any EQ can self oscillate, you're basically feeding back a signal into itself and the Q point if at a high enough frequency can act like a ring
alanzo
Not all instruments have self-oscillating filters. Many of the ones that do will only self-oscilate if you select the right filter type and press a key. All of them require the res to be (basically) turned up to max.

Filter self-oscillation is kind of a vintage-synth thing. Many of the instruments by Arturia can do it. It's not really something that's super desirable in most situations since the pitch is very difficult to control. It can be fun for FX but it's basically just producing a sine wave with missing harmonics.
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