Korg MICRO LFO 1, 11. LFO 2 SYNTH/VOCODER, Wave LFO1, Tempo Sync OFF, on Frequency, Wave LFO2

10.LFO 1, 11. LFO 2 — SYNTH/VOCODER

The timbre has two LFOs (Low Frequency Oscillator).

The cyclic change produced by an LFO can modulate various aspects of the sound such as the pitch, tone, or volume.

Use "WAVE" (knob 1) to select the LFO waveform, knob 2 to select the key sync method, "TEMPO SYNC" (knob 3) to synchronize the LFO cycle to the tempo, and "FREQUENCY"/"SYNC NOTE" (knob 4) to specify the frequency.

LFO1 and LFO2 can be used as Virtual Patch sources to apply modulation to a variety of parameters. (➝ p.30)

WAVE (LFO1) [Saw, Square1,

KEY SYNC [OFF, Timbre, Voice]

TEMPO SYNC [OFF, ON] FREQUENCY [0...127]

Triangle, Sample&Hold]
WAVE (LFO2)	[Saw, Square2,

Sine, Sample&Hold]

Selects the LFO waveform. Figure 10-1

Saw ():

Square1 ():

Square2 ():

Triangle ():

Sine ():

Sample&Hold ():

Amplitude changes irregularly (sample & hold)

Specifies how the LFO will be ap- plied to a voice when note-on oc- curs.

OFF ():

The LFO phase will not be reset when note-on occurs.

(➝ Figure 10-2)

Timbre ():

The LFO phase will be reset at the first note-on that occurs from a state of no keys pressed. Subsequently, modulation will continue to be ap- plied at the same LFO phase even for subsequent note-on's.

(➝ Figure 10-3)

Voice ():

The LFO phase will be reset at each note-on, and modulation of differ- ing phases will apply to each voice. (➝ Figure 10-4)

Specifies whether the LFO cycle will be synchronized to the tempo or MIDI Clock.

OFF ():

The LFO will not be synchronized. It will operate at the frequency specified by the "FREQUENCY" parameter.

ON ():

The LFO will be synchronized to the ARPEG.A "TEMPO" or to MIDI Clock messages from an external device.

If "TEMPO SYNC" is ON, select-

ing LFO2 Frequency () as "DEST" in PATCH 1–4 will have no effect.

Specifies the frequency of the LFO. Increasing this value will result in a faster frequency.

This parameter will be displayed and can be set if "TEMPO SYNC" is OFF.

SYNC NOTE [1.1...1.32]

Specifies the proportion of the LFO cycle relative to the tempo specified by ARPEG.A "TEMPO." (➝ p.65)

This parameter will be displayed and can be set if "TEMPO SYNC" is ON.

1/1(): Four beats will be one cycle.

1/2(): Four beats will be two cycles.

1/4(): One beat will be one cycle.

1/8(): One beat will be two cycles.

Figure 10-2

Note on

Figure 10-3
Note on	Note on

Note all off

Figure 10-4

Note on

1VOICE

Note on

2VOICE

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 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 LFO as a Virtual Patch source, select the desired parameter as the destination, and apply modulation to produce various effects.

The microKORG provides some dedicated parameters for applying modulation from the LFO; for LFO1 you can use OSC1 "CONTROL 2," and for LFO2 you can use PITCH "VIBRATO INT."

29