Roland Groovebox MC-307 Reference Manual page 98

Chapter 6 Making Original Patches
- LFO1/2: WAVEFORM, RATE, TEMPO SYNC, KEY
SYNC, FADE MODE, DELAY TIME, FADE TIME,
OFFSET, PITCH DEPTH, FILTER DEPTH, AMP DEPTH,
PAN DEPTH
* See the following sections for descriptions of the setting ranges
and contents of the respective parameters.
LFO1/2: WAVEFORM
Select the output waveform for LFO 1/2. The sound will be
modulated in the same shape as the selected waveform.
This setting is equivalent to waveform selection (P. 27) using
LFO 1 on the panel.
Available Settings:
- TRI (triangle): The sound will be modulated
continuously. This is a frequently-used waveform, and is
suited for effects such as vibrato.
- SIN (sine wave): The sound will be modulated smoothly.
- SAW (sawtooth wave): When the sound reaches the
upper value, it will return to the original position and
begin rising again.
- SQR (square wave): The sound will be modulated as if it
were being switched between two positions.
- TRP (trapezoid wave): The sound will be modulated as if
it were being switched between two positions. The curve
at the transitions differs from square wave.
- S&H (sample & hold): This setting causes the sound to
change unpredictably, and is suitable for creating sound
effects.
- RND (random): This setting causes the sound to change
unpredictably, and is suitable for creating sound effects.
- CHS (chaos): This setting causes the sound to change
unpredictably without regard to frequency, and is
suitable for creating sound effects.
* When CHS (chaos) or RND (random) is selected, the LFO rate
setting will be ignored.
LFO1/2: RATE
Here's how to adjust the modulation speed of LFO 1.
As this value is increased, the sound will be modulated more
rapidly. As this value is decreased, the sound will be
modulated more slowly.
Range: 0–127
When LFO Tempo Sync (P. 98) is "ON," you can specify this
parameter in terms of a note value.
Range:
* LFO Rate settings are common to PITCH (pitch), FILTER
(brightness) and AMP (volume). The rate cannot be set
98
independently for these three.
LFO1/2: TEMPO SYNC
This parameter synchronizes the LFO modulation frequency
to the tempo of the pattern.
Range:
- ON:The modulation speed will be synchronized to the
tempo (BPM), and the LFO Rate parameter can be set in
terms of a note value.
- OFF:The modulation speed will be determined by the
LFO Rate setting, regardless of the tempo (BPM).
LFO1/2: KEY SYNC
This parameter synchronizes the LFO cycle to the timing at
which the keyboard pads are played.
Range:
- ON:The LFO cycle will begin when the keyboard is
played.
- OFF:The same LFO waveform will be output regardless
of the timing at which the keyboard is played.
* When Key Sync is on, the LFO waveform will begin for each
note when it is played, producing a spacious sound with a
sense of movement. When Key Sync is off, a single LFO
waveform will be applied to all notes, producing a unified
sound. When you wish to emphasize the effect (vibrato etc.),
you may want to turn this parameter off. Also, when Tempo
Sync is on, leaving Key Sync off will allow you to synchronize
precisely to the tempo (BPM) of the pattern.
LFO1/2: FADE MODE
Select the way in which the LFO effect will be applied.
Range:
- OnI (On-In): The effect will be applied gradually, after
the keyboard pad is pressed.
- OnO (On-OUT): The effect will be applied immediately
when the keyboard pad is pressed, and will gradually
disappear.
- OfI (Off-In): The effect will be applied gradually, starting
when the keyboard pad is released.
- OfO (Off-Out): The effect will be applied while the
keyboard pad remains pressed, and will gradually
disappear after it is released.
LFO1/2: DELAY TIME
Depending on the Fade Mode setting, specify the time over
which the LFO will be applied or the time over which it will
continue, etc.
Higher settings will produce longer times.
Range: 0–127