Oberheim OB 12 Operating Manual - page 37

OB   12

Z-Domain Synthesizer

(sawtooth or ramp): the signal passes

immediately from a maximum to a

minimum value.

(triangular): starting from a minimum

level, the signal rises to a maximum

value in a given period of time, then

returns to the minimum level in the

same period of time.

(square): the signal assumes two

single values.

(random): the signal assumes random

values.

7.7

MODULATING the SOUND with the

[MODULATION] WHEEL (LFO2)

157

LFO2 works in exactly the same way as LFO1, with the sole difference that the amount of

modulation can be adjusted using the [MODULATION] wheel.

The panel section comprises:

•

[RATE]: regulates the frequency of the modulating signal. Turn

the trimmer clockwise to increase the frequency of the signal.

•

[DEPTH]: regulates the maximum modulation depth; this is then

regulated by the [MODULATION] wheel, which sends it to the

various sections.

•

[WAVE SELECT]: specifies the waveform of the modulating

signal. The waveforms are the same as those generated by LFO1.

•

[DEPTH SELECT]: this button allows you to specify the section

on which you are regulating the maximum LFO2 modulation depth

by means of the [DEPTH] trimmer.