vibrato

[Don Tillman]

   From: WeAreAs1 at aol.com
   Date: Thu, 27 Jan 2000 23:55:41 EST

   farky at ix.netcom.com wrote:
   << Does anybody know of a simple circuit to produce vibrato on an input
   audio signal?  The vibrato I'm speaking of is the pitch-shift kind, not
   to be confused with tremolo. >>

   You can use an analog delay chip (BBD) and modulate its clock with an LFO.  

Another approach is to use a phase shifter circuit without the
original signal mixed into the phase shift output.  That means you can
take a standard phase shifter stomp box, like the ol' MXR Phase 90,
and clip one connection, and it's a vibrato.  Note that the effect can
be pretty subtle at low sweep speeds.

 -- Don