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THE LOW FREQUENCY OSCILLATORS
The next group of pages down are concerned with the low frequency oscillators, LFO1 and
LFO2.
L F O 1
The first of these is LFO1:
The first LFO1 page allows you to select the waveform and set its rate. The waveforms you may
select are:
TRIANGLE (
SAWTOOTH (
SQUARE (
RANDOM (
The RATE parameter sets the speed of LFO1 and is variable between 00 and 99. 45 is a typical
value for vibrato.
To select the LFO waveform, press F1 and use the DATA wheel and to set the LFO1 rate,
press F2 and use the DATA wheel to change the value.
NOTE: Because the LFO is a 'master' function that affects the whole program, keygroup
selection is not possible in these pages.
The next page down looks something like this:
In this page, you may set the depth of LFO1 modulation and the modulation delay time (i.e.
how long the vibrato takes to be effective after note-on).
S2000 Operator's Manual - Version 1.30
)
This triangle wave gives a rising and falling effect. At around a setting
of 75, this would normally be used for vibrato but can be assigned
anywhere you like and can be used for filter sweeps, panning,
amplitude modulation and slow pitch sweeps. This is a 'bi-polar'
modulation waveform that 'rotates' around the note you are playing to
give a natural vibrato effect.
)
This sawtooth waveform is used mostly for special effects. It rises
slowly and falls abruptly. This is a 'uni-polar' waveform that jumps
between the held note and the modulation level set at the
destination.
)
This square wave gives stepped 'up and down' effect. When applied
to pitch it can be set to give trills or large octave jumps. This is a 'uni-
polar' waveform that jumps between the held note and the modulation
level set at the destination.
)
This gives a totally random, stepped waveform and is suitable for
special effects. The effect that immediately springs to mind, of course,
is the classic 'sample and hold' effect found on analogue synthesisers
- by routing this to pitch you can create random pitch effects suitable
for, say, creating computer effects, especially when the LFO speed is
set quite fast. When applied to the filter(s), you can create many
interesting random tone change effects.
PROGRAM EDIT
Page 113
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