Roland Fantom-S88 用户手册

 

fig.03-19_50

 

For details on the setting, refer to 

 

 

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.

 

Selects the waveform of the LFO.

 

Sine wave

 

Triangle wave

 

Sawtooth wave

 

Sawtooth wave (negative polarity)

 

Square wave

 

Random wave

 

Once the attack of the waveform output by the LFO is 
allowed to develop in standard fashion, the waveform then 
continues without further change.

 

Once the decay of the waveform output by the LFO is 
allowed to develop in standard fashion, the waveform then 
continues without further change.

 

Trapezoidal wave

 

Sample & Hold wave (one time per cycle, LFO value is changed)

 

Chaos wave

 

If you set this to “BD-U” or “BD-D,” you must turn the 1:/2:Key 
Trigger parameter to “ON.” If this is “OFF,” it will have no effect.

 

★

 

Adjusts the modulation rate, or speed, of the LFO.

 

 0–127, Note

LFO Rate sets the beat length for the synchronized tempo is 
synchronized with the tempo set in a sequencer.

(Example)

For a tempo of 120 (120 quarter notes occur in 1 minute (60 seconds))

 

This setting will be ignored if the Waveform parameter is set to 
“CHAOS.”

 

LFO Rate Detune makes subtle changes in the LFO cycle rate (1:/
2:Rate parameter) each time a key is pressed. Higher settings will 
cause greater change. This parameter is invalid when Rate is set to 
“note.”

 

 0–127

 

Raises or lowers the LFO waveform relative to the central value 
(pitch or cutoff frequency). Positive (+) settings will move the 
waveform so that modulation will occur from the central value 
upward. Negative (-) settings will move the waveform so that 
modulation will occur from the central value downward.

 

 -100, -50, 0, +50, +100

 

Delay Time (LFO Delay Time) specifies the time elapsed before the 
LFO effect is applied (the effect continues) after the key is pressed (or 
released).

 

 0–127

 

 

setting until the desired effect is achieved.

 

When using violin, wind, or certain other instrument sounds in a 
performance, rather than having vibrato added immediately 
after the sounds are played, it can be effective to add the vibrato 
after the note is drawn out somewhat. If you set the Delay Time 
in conjunction with the Pitch Depth parameter and Rate 
parameter, the vibrato will be applied automatically following a 
certain interval after the key is pressed. This effect is called 

 

.

 

 (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))

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