Oberheim GM-400, Operating Manual

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Oberheim GM 400
Digital Signal Processor
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Source Y parameter. Range: 0 - Chamber depth.
They set the position of the sound source inside the reverberation chamber.
Listener Orientation parameter. Range: 0° - 360°. Step 5°
They set the direction in which the listener is facing.
Listener Spread parameter. Range: -90° - 90°. Step 5°
They regulate the angle of spread of the listening process. Positive angles indicate an
outward extension of the spread.
Listener Shooting parameter. Range: 0° - 360°. Step 5°
They regulate the listening pick-up angle.
The last three parameters set the virtual polar diagrams of the listening points.
The two diagrams which follow show two examples intended to make the use of these controls
simpler. The first example refers to simulation of use of microphones, while the second
simulates listening by a human being.
In the examples, the Orientation value is positive while the Spread is negative.
In case of simulation of use of microphones.
Orientation
Spread
Shooting
In case of simulation of listening by a human being.