Oberheim OB 12 Operating Manual - page 52

OB   12  

Z-Domain Synthesizer

172

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BALANCE2 

([BALANCE], RING MOD slider)

: regulates the quantity of signal obtained from the first

balancing block which will be modulated by the Ring Modulator, in a range of values from 0

(no modulation by the Ring Modulator) to 100 (signal totally modulated by the Ring Modulator).

Intermediate values will give intermediate quantities of modulated signal.

•

BALANCE3 

([BALANCE], NOISE slider)

: sets the balancing between the signal obtained from the

second balancing function and the white noise in a range of values between 0 (no white

noise) and 100 (white noise only). Intermediate values will give intermediate balances between

the two signals.

We will now move on to setting of the envelope dedicated to the two oscillators (described by the

diagram at the start of the section). When the ENVELOPE folder is selected, the display will

change to:

Containing the following programming parameters:

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ATTACK TIME 

([ATTACK] in the OSCILLATOR COMMON section)

: sets the envelope attack time, i.e.

the time from when the key is pressed to when the maximum pitch modification is reached, in

a range of values from 0 (no attack time) to 100 (maximum attack time).

•

DECAY1 TIME 

([DECAY] in the OSCILLATOR COMMON section)

: sets the first portion of the envelope

decay time, or the time from when the oscillator reaches the maximum degree of pitch

modification to when the minimum level of DECAY1 is reached.

•

DECAY1 LEVEL: regulates the level of the breakpoint between the DECAY1 and DECAY2

segments, thus allowing the use of two different time values for the envelope decay. The

range of values is from -50 (pitch modification level the other side of zero from that reached

with the ATTACK TIME segment) to +50 (pitch modification level identical to the maximum

reached with the ATTACK TIME, throughout the duration of DECAY1). If this parameter is set

as 0, the pitch modification will be annulled, with consequent elimination of the DECAY2

segment (the envelope is thus concluded).

•

DECAY2 TIME: sets the second portion of the envelope decay time, or the time from when the

pitch modification reaches the value specified by DECAY1 LEVEL to when the pitch modification

is annulled. The range of values assumed by this parameter is from 0 (DECAY2 time portion

absent and pitch modification annulled when the modification reaches the DECAY1 LEVEL)

and 100 (maximum time value for the second decay portion).

Now select the ENV.DEPTH (Envelope Depth) folder; the video page relating to regulation of the

envelope depth, separately for the two oscillators, will appear: