Korg MICRO manual Triangle Wave, You can modify the waveform by adjusting this value, Sine Wave

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3.OSC1 (Oscillator 1) — SYNTH/VOCODER

WAVE

Triangle Wave ():

This is a triangle wave, which has weaker overtones and a stronger fundamental than a sawtooth wave or square wave. It is suitable for mellow bass sounds.

CONTROL 1

CONTROL 1 [0...127]:

You can modify the waveform by adjusting this value.

A setting of 0 will produce a triangle wave, and a setting of 127 will pro- duce a waveform with a pitch that is one octave and a fifth higher. (➝ Figure 3-3)

CONTROL 2

CONTROL 2 [0...127]:

LFO1 is used to apply wave form modulation to the waveform speci- fied by "CONTROL 1." The "CON- TROL 2" setting specifies the depth of the modulation produced by LFO1.

Figure 3-3

0

Sine Wave ():

This is a sine wave. This waveform contains only the fundamental, and no overtones at all. It can be used to create claves or bass drum sounds. In some synth programs, oscillator 2 is used to perform cross modulation*3-2(➝ Figure 3-4), creat- ing a more complex overtone struc- ture.

Cross modulation by a sine wave cannot be applied to a vocoder pro- gram.

Since a sine wave contains no overtones, the filter will not modify its tone.

Vox Wave ():

This simulates a waveform similar to human vocal cords. Even if the oscillator pitch is changed, the fre- quency spectrum will be main- tained, which makes this effective when used for vocal-type sounds or as a vocoder oscillator.

Select HPF or BPF as the filter, and adjust "Cutoff" to create a vocal- type sound.

CONTROL 1 [0...127]:

On a synth program, this adjusts the depth of cross modulation.

On a vocoder program, this modi- fies the waveform.

CONTROL 1 [0...127]:

Adjusting this value will modify the waveform. (➝ Figure 3-5)

CONTROL 2 [0...127]:

On a synth program, this adjusts the depth of additional modulation applied by LFO1 to the cross modu- lation specified by "CONTROL 1." On a vocoder program, this adjusts the depth of modulation applied by LFO1 to the waveform that you se- lected by "CONTROL 1."

CONTROL 2 [0...127]:

LFO1 is used to apply modulation to the waveform specified by "CONTROL 1." CONTROL 2 sets the depth of the modulation ap- plied by LFO1.

Figure 3-4			*3-2: Cross Modulation
	X-mod Depth + X-mod Depth Mod		This is a type of oscillator modula-
OSC2			tion available on analog synthesizers
			of the past. Normally, a low-fre-
OSC1			quency signal (such as from an LFO)
		OSC1 Output	is used as the modulation source for
			an oscillator, but Cross Modulation
			lets you use another oscillator as the
			modulation source, creating sounds
			with a complex overtone structure
			that would not normally be produced
			otherwise. On the microKORG, you
			can use oscillator 2 to apply cross
			modulation if a sine wave is selected
			for oscillator 1. Gradually raise the
			"CONTROL 1" level, and notice how
			the sound changes. This can produce
Figure 3-5			distorted sounds, or sounds with a
			metallic character.
			You can produce an even wider vari-
			ety of effects by adjusting the OSC2
0	63	127	"SEMITONE" or "TUNE" parameters.

You can also achieve interesting re- sults by applying sync modulation and cross modulation at the same time.

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