DOEPFER A-178 Handmatig

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doepfer

Theremin Volt. Source

Antenna

CV Out

Gate Out

System A - 100

A-178

Offset

Threshold

1. Introduction

Module A-178 (Theremin Voltage Source) produces

a variable control voltage which gets bigger the

closer your hand gets to its antenna.

You can use this control voltage in any modulation or

control process, and thus have access to an extra

system of real-time control in the synthesis process.

You use the Offset control to set the null point (zero)

of the control voltage output. Two LEDs give a visual

indication of the voltages produced.

The module also produces a gate signal at the gate

output: the signal goes "high" as soon as a voltage is

sensed which is above the threshold set with the

Threshold control. An LED gives a visual indication

of the presence of a gate signal.

This gives you the ability to produce a gate signal

simply by moving your hand.

A-178

Theremin