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Doepfer A-140 ADSR Envelope Generator

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Module A-140 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.



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Description

Module A-140 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 parameters: Attack, Decay, Sustain and Release.
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 be re-triggered, ie. start from scratch again, each time a trigger signal is sensed at the Retrig. input socket, when the gate is still open.
Module A-140 has available a three-position toggle switch to select one of three time ranges. The envelope duration ranges from about 50us (microseconds) up to several minutes.
In combination with the Comparator module A-167 a free-running "ADSR-LFO" can be realized.


         technical details
Width: 8HP
            Connections: 
Gate input 
Retrigger input 
Output 2x 
Output (inverse)

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