Using The Panel; Setting The First Waveform; Main Structure - Oberheim OB 12 Operating Manual

OB 12
Using the panel, allowing real time modifications, is one of the main features of the best
synthesizers. For this reason, we will first describe all the functions which can be recalled using
the controls on the front panel.
Points 7.1 to 7.7 illustrate the sections used to edit the Timbre to create the desired sound. Points
7.8 to 7.15 describe the sections relating to additional functions, such as added effects, equalization,
using the wheels and the Ribbon Controller, etc., which are also placed on the front panel since
they are just as important as the functions described in the previous points.
As we have already seen in our illustration of the OB-12 main structure, the oscillator supplies the
basic waveform for creation of the sound desired.
The OB-12 oscillators (Oscillator 1 and Oscillator 2) are able to generate a sound using three
main waveforms, which are:
a sawtooth waveform (or ramp).
a triangular waveform;
a square waveform (or pulse);
using the panel controls on the display, you can mix (or delete) the three waveforms to allow you
to obtain the solution you require.
We will now take a look at the controls on the panel.
[WAVE MIX]: you can use these three
sliders to mix the three waveforms
which will then form the output of the
first oscillator. As described on the
panel, the first slider controls the level
of the sawtooth waveform, the second
controls the triangular waveform and
the third the square waveform.
[WAVE SELECT]: you can use these
keys to activate/deactivate the
waveform associated to them. The
LEDs above the keys display the status
of the waveform according to the
following rule:
LED on: waveform present
-
LED off: waveform deactivated
-
[WAVE CTRL]
(Wave Control)
the level, controlled by the sliders) relating to the waveform currently selected. The parameter-
control correspondence is described in the OSC1 PARAM section. To hook this control to the
waveform parameter of your choice, press the relative [WAVE SELECT] button or move the
slider related to the waveform.
: this trimmer regulates the second parameter (i.e. in addition to
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