109
Using the SonicCell in Patch Mode
■
Patch LFO1, 2 screens...................................................................................................
An LFO (Low Frequency Oscillator) causes change over a
cycle in a sound. Each tone has two LFOs (LFO1/LFO2), and
these can be used to cyclically change the pitch, cutoff
frequency and volume to create modulation-type effects such
as vibrato, wah and tremolo. Both LFOs have the same
parameters so only one explanation is needed.
LFO settings (Patch LFO1, 2/Patch Step LFO screen)
Parameter
Value Explanation
Waveform
Selects the waveform of the LFO.
SIN:
Sine wave
TRI:
Triangle wave
SAW-U:
Sawtooth wave
SAW-D:
Sawtooth wave (negative polarity)
SQR:
Square wave
RND:
Random wave
BND-U:
Once the attack of the waveform output by the LFO is allowed to develop in
standard fashion, the waveform then continues without further change.
BND-D:
Once the decay of the waveform output by the LFO is allowed to develop in
standard fashion, the waveform then continues without further change.
TRP:
Trapezoidal wave
S&H:
Sample & Hold wave (one time per cycle, LFO value is changed)
CHAOS:
Chaos wave
VSIN:
Modified sine wave. The amplitude of the sine wave is randomly varied once
each cycle of the waveform.
STEP:
A waveform generated by the data specified in LFO Step 1–16. This produces a
fixed pattern of stepwise change, like that created by a step modulator.
If you set this to “BND-U” or “BND-D,” you must turn the Key Trigger to “ON.” If this is “OFF,” it
will have no effect.
Rate
★
0–127,
Note
(Refer to p. 100 for
available note val-
ues.)
Adjusts the modulation rate, or speed, of the LFO.
LFO Rate sets the beat length for the synchronized tempo is synchronized
with the tempo set in an external MIDI sequencer.
(Example)
For a tempo of 120 (120 quarter notes occur in 1 minute (60 seconds))
Setting LFO Rate
(half note) 1 second (60/60= 1 (second))
(quarter note) 0.5 seconds (60/120= 0.5 (seconds))
(eighth note) 0.25 seconds (60/240= 0.25 (seconds))
This setting will be ignored if the Waveform parameter is set to “CHAOS.”
★
You can use matrix control to modify this. (p. 95)
Rate Detune
0–127
LFO Rate Detune makes subtle changes in the LFO cycle rate (Rate parame-
ter) each time a key is pressed. Higher settings will cause greater change.
This parameter is invalid when Rate is set to “note.”
Offset
-100, -50, 0, +50,
+100
Raises or lowers the LFO waveform relative to the central value (pitch or cut-
off frequency). Positive (+) settings will move the waveform so that modula-
tion will occur from the central value upward. Negative (-) settings will move
the waveform so that modulation will occur from the central value down-
ward.
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