90-degree phase tri lfo revisited

Paul Perry pfperry at melbpc.org.au
Sun Aug 8 05:10:46 CEST 1999


At 01:03 PM 7/08/99 -0600, Dylan George wrote:
>Is there some other way to arbitrarily shift the phase of a lfo?  Or to
>derive new LFO's from old ones and to change their phase?  I thought of
>using a timed delay, but I don't think most of my audio delays have the
>frequency range to cope.

you can do anything to a LFO that you can do to an audio signal,
eg high pass or low pass filter them etc. Or put echo on them, if you
can make a delay unit that goes way down to DC. (with a modular system,
use the original LFO to modulate a steady audio tone, echo or delay the result,
put it to an envelope follower, and your envelope is the original lfo
delayed)

>I have had in the back of my mind for a while an idea for a sort of a LFO
>master controller: Multiple sync'd lfos which can be adjusted in phase and
>multiples or fractions relative to each other.

not a problem using the triangle phase shifter as the base!

What is interesting with multiple lfo systems, is that whereas in audio
the audible result of mixing sources is phase independant, with lfo's
the phase matters a great deal. So plentof scope here!

paul perry melourne australia




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