ADSR Envelope Generator
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.
For more detailed information please look at the English user's manual: http://www.doepfer.de/a100man/A140man.pdf
Related modules are the 4-fold ADSR A-143-2, the voltage controlled ADSR A-141 and the voltage controlled Decay/Gate module A-142.
This Module is currently available.$95 submitted Oct 6th 2012, 13:36 by cger | last Change Sep 29th 2016, 02:04 by acgenerator
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