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WAVE
[Saw, Square, Triangle, Sine, Vox,
DWGS, Noise, Audio In]
Selects the waveform for oscillator 1.
CONTROL 1 [0...127/–
–
–]
Adjusts a parameter specific to the
selected waveform.
CONTROL 1 has no effect if
"WAVE" is set to DWGS.
CONTROL 2 [0...127/1...64]
Adjusts a parameter specific to the
selected waveform.
3. OSC1 (Oscillator 1) — SYNTH/VOCODER
Saw Wave ( ):
This is a sawtooth wave. This wave-
form is shaped like the tooth of a
saw, and contains a rich overtone
spectrum.
You can use this to create numer-
ous instrumental sounds such as
string and brass sounds, or typical
analog synth sounds such as synth
bass or synth brass.
CONTROL 1 [0...127]:
Adjusting this value will modify the
waveform.
A setting of 0 will produce a con-
ventional sawtooth wave, and a set-
ting of 127 will produce a sawtooth
wave one octave higher.
(➝Figure 3-1)
CONTROL 2 [0...127]:
LFO1 is used to apply modulation
to the waveform specified by
"CONTROL 1." The "CONTROL 2"
setting specifies the depth of the
modulation produced by LFO1.
For example by setting LFO1
"WAVE" to Triangle (
) and ad-
justing the LFO speed, you can pro-
duce a detune-like effect.
Square Wave ( ):
This is a square wave. It has a rectan-
gular shape, and strictly speaking is
actually square only when the top and
bottom of the waveform have the same
width (a "pulse width" of 50%). If the
pulse width is other than 50%, this is
also called a pulse wave.
A square wave is used for woodwind
sounds such as clarinet, and for
wooden percussion sounds. A pulse
wave is used for plucked-string
sounds and reed-type sounds.
CONTROL 1 [0...127]:
Adjusts the pulse width. A setting
of 0 produces a pulse width of 50%
(square wave), and a setting of 127
produces a pulse width of 0% (there
will be no sound). The sound will
become "harder" as you adjust this
parameter toward 0%.
(➝Figure 3-2)
CONTROL 2 [0...127]:
LFO1 is used to apply PWM (pulse
width modulation)*
3-1
to the pulse
width specified by "CONTROL 1."
The "CONTROL 2" setting specifies
the depth of the modulation pro-
duced by LFO1. For example by
setting LFO1 "WAVE" to Triangle
(
) and adjusting the LFO
speed, you can add depth to the
sound.
Figure 3-1
0
63
127
Figure 3-2
0 63 127
*3-1: PWM
Pulse Width Modulation refers to the
use of a separate signal to vary the
pulse width over time. On the
microKORG, you can use PWM to
modify the tone via LFO1, or via Vir-
tual Patch from modulation sources
LFO2, Filter EG, or Amp EG.
The oscillator generates the waveform that is the basis of the sound.
The timbre has two oscillators. The settings in this section are for oscillator 1. "WAVE" (knob 1) selects the basic waveform for oscillator 1,
and "CONTROL 1" (knob 2) and "CONTROL 2" (knob 3) modify the waveform. For example if you set "WAVE" to Saw (
), adjusting the
"CONTROL 1" value will modify the sound, changing the waveform as shown in figure 3-1. Adjusting "CONTROL 2" will apply LFO1
modulation to the waveform specified by "CONTROL 1," producing additional change.