The generation and maintenance of a periodic motion by a source of power that lacks any corresponding periodicity.
That’s the technical definition of self-oscillation, but you don’t need to understand that to know how self-oscillating delay effects work. What you see going on in the video above is a result of turning up the feedback control on a delay pedal until its delay signal feeds back into itself, creating an endless loop of repeats that gets louder the longer it goes. No guitar or instruments are necessary, and the tones and sonic eccentricities created by the MXR Carbon Copy, TC Electronic Alter Ego, and Catalinbread Belle Epoch are each a result of their own analog circuits.
delay Pedals Used: