RK-100S parameter guide
LFO1, LFO2
Each timbre contains two LFOs. An LFO produces a cyclic change that can be
used to modulate the pitch, tone, or volume of the sound.
Note: LFO1 and LFO2 can be used as Virtual Patch sources to apply modulation
to a variety of parameters. See page 25.
LFO (Low Frequency Oscillator)
The LFO (Low Frequency Oscillator) is an oscillator that produces a relatively
slow (low-frequency) oscillation, and is used to apply cyclic modulation to various
aspects of the sound. Some typical ways to use the LFO are vibrato (use LFO to
raise and lower the pitch), wah (use LFO to raise and lower the cutoff frequency),
and tremolo (use LFO to raise and lower the volume). You can select the LFO as
a Virtual Patch source, select the desired parameter as the destination, and apply
modulation to produce various effects.
The RK-100S provides special parameters that can be modulated from an LFO.
If the OSC1 "OSC MOD" parameter is set to WAVEFORM, LFO1 will be able to
modulate the "LFO1 MOD" parameter, and LFO2 will be able to modulate the
PITCH "VIBRATO INTENSITY" parameter.
WAVE (LFO1)
WAVE (LFO2)
Selects the LFO waveform.
Saw
Square
Triangle
Random
KEY SYNC
Specifies how the LFO will be applied to a voice when note-on occurs.
24
[Saw, Square, Triangle, S&H, Random]
[Saw, Square+, Sine, S&H, Random]
Square+
Sine
S&H
Amplitude changes irregularly
(Sample & Hold)
[Off, Timbre, Voice]
Off: The LFO phase will not be reset when note-on occurs.
Note on
Timbre: The phase of the LFO will be reset by the first note-on that occurs from a
condition of no keys being held; it will not be reset for subsequently played voices.
Note on
Note all o
Voice: The LFO phase will be reset at each note-on, and modulation of differing
phases will apply to each voice.
1VOICE
2VOICE
BPM SYNC
Specifies whether the LFO cycle will be synchronized to the internal tempo or
to an external MIDI Clock.
Off: The LFO will not be synchronized. It will operate at the frequency specified
by the "FREQ" parameter.
On: The LFO will be synchronized to the TAP button or to MIDI Clock messages
from an external device.
Note: "BPM SYNC" is On, selecting LFO1 FREQ or LFO2 FREQ as "DESTINA-
TION" in PATCH 1–5 will have no effect.
FREQ (Frequency)
Specifies the frequency of the LFO. Increasing this value will result in a faster
frequency.
Note on
Note on
Note on
[Off, On]
[0.01...100.0Hz]