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If this all sounds too far out, that’s okay: sometimes we don’t really believe
it either. But the sounds produced speak for themselves. A model may help:
Think of a quadraphonic sound system, with four speakers enclosing a square
space. The joystick, of course, is similar to a quad balance control. Each
speaker supplies a dierent timbre, such as a clarinet on one, harmonica on
another, an organ and tuba on the remainder. Now suppose that in your hand
is an omni-directional microphone which picks up the sum of the timbres
at any particular point within the eld. When you stand in the center, the
microphone picks up an equal mix of all four timbres. To understand vector
synthesis, you have to try to imagine what the microphone picks up as you
walk back and forth, or run really quickly around the room (like 20 times in a
second!).
Since words can take us no farther in describing sound, the best way to learn
vector synthesis will be not by studying vectors, but by getting right into the
front panel, experimenting with dierent waveforms and mixer modulations,
and listening carefully to the result.
OSCILLATOR GROUP CONTROLS
There is one basic display from which all oscillator parameters are edited. This
display appears upon pressing any of the four Oscillator Group switches. The
display format is as follows:
(oscillator A-D) (wave#)
Frequency: (coarse).(ne)
Control over these parameters is achieved through four switches. Oscillator
Select selects the oscillator being adjusted, and Wave#, Coarse Freq, or Fine
Freq select the parameter to be adjusted. Each control is discussed below.
In order to monitor oscillator parameter changes, it may be useful to isolate
one of the oscillators from the other three. Several utilities are provided for this
purpose, and are discussed under “The VS Basic Patch.”
Select
This is the only oscillator control which is not adjusted with the slider. Instead,
it either selects the oscillator control group, or advances the LCD to the next
oscillator (A-D) and displays its three parameter settings.
1. Press Oscillator Select.
The display shows the selected oscillator (A-D), the wave number assigned to
that oscillator (internal or cartridge 0-126, and noise), and its initial frequency
(00.00 - 24.99).
The display cursor underlines one of the three oscillator parameters.
2. To adjust the current oscillator parameter, use the slider.
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