Doepfer A-140 Handleiding

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doepfer System A - 100ADSRA-140

1

1. Introduction

Module A-140 (ADSR) is an envelope generator,

and, since it puts out control voltages, counts as one

of the modulation devices in a modular system.

As soon as the gate input receives sufficient voltage,

the ADSR generates a variable voltage, changing in

time, called an envelope. This varying voltage is

output in normal (positive) and inverted form, and can

be used, eg., for voltage controlled modulation of a

VCO, VCF, or VCA, or for processing other modules’

inputs and outputs.

The shape of the envelope is governed by four para-

meters: A D Sttack, ecay, ustain and Release (see Fig.

1 on page 3).

The envelope is started(triggered)by a gate signal

either from the INT.GATE voltage on the system bus,

or, if a signal is put into it, from the gate input socket.

The envelope can also bere-triggered, ie. start from

scratch again, each time a trigger signal is sensed at

the Retrig. input socket, when the gate is still open

(see Fig. 2 on page 5).

Gate

Decay

Inverse

Output

Release

Attack

A-140

ADSR

Sustain

Retrigger

Output

Output

ADSR

Control

Time

Range

Product specificaties