what is self-oscillation?

Discussion in 'Effects [BG]' started by Sean S, Nov 9, 2006.


  1. I've read and seen the term "self-oscillation" often when talking about delays, but I don't know what it means...What exactly is "self-oscillation"?

    I did a search, nothing...

    if someone has a scientific and practical explanation, that would be awesome.

    sound clips would be appreciated

    thanks

    sean
     
  2. Self-oscillation is an effect that you get when you turn the feedback amount up really high on analog or analog modelling (I believe some digital units as well) delays. Where they delay gets to the point where it is cascading the delay into the delay of the delay of the delay of the delay... etc.

    For some very pronounced examples I recommend listening to some older Butthole Surfers albums. They use it to great effect on their vocal tracks a lot.
     
  3. bongomania

    bongomania Commercial User

    Oct 17, 2005
    PDX, OR
    owner, OVNIFX and OVNILabs
    When the level and saturation of the delay repeats hits a certain point, it starts to feed back into itself, and like any feedback loop it gets louder and louder and crazier and crazier the longer you let it run. In delays, the signal feeding back into itself causes more delay repeats on the original repeats, so you get an endless wash (or even a screaming torrent) of sound. That sound can be played with by twiddling the knobs of the delay, and you can fade it in and out, and goose it along a bit with more signal input. Delay self-oscillation is better than pot, and better with pot (if you're into that sort of thing). ;)
     
    hisdudeness and njones89 like this.
  4. Ah, that's a much better description.

    What *he* said.
     
  5. One word: "fluid"
     
  6. lug

    lug Supporting Member

    Feb 11, 2005
    League City, Tx
    Something that though everyone does it, we try not to talk about it in polite society. :oops:
     
  7. animal52

    animal52

    Jul 1, 2006
    DC area
    It was only a matter of time. You beat me to it, no pun intended.
     
  8. Primary

    Primary TB Assistant

    Here are some related products that TB members are talking about. Clicking on a product will take you to TB’s partner, Primary, where you can find links to TB discussions about these products.

     
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