Difference between revisions of "Envelope generator"

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(links to schematics at http://hem.bredband.net/elmuced/eh30.htm are dead)
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=== Schematics ===
 
=== Schematics ===
  +
'''Readily available analogue IC and discrete component based'''
*Digisound 80 [http://www.digisound80.co.uk/digisound/modules/80-10/80-10.htm 80-10 Voltage Controlled Envelope Generator], [[CEM3310]] based. ''Electronic Music Circuits'' by [[Barry Klein]],1982, p. 62-3, includes [[Charles Blakey]]'s independent trigger input modification.
 
*Digisound 80 [http://www.digisound80.co.uk/digisound/modules/80-8/80-8.htm 80-8 Dual ADSR], CEM3310 based
 
*Digisound 80 [http://www.digisound80.co.uk/digisound/modules/80-18/80-18.htm 80-18 Dual Multi-Function Envelope Generator], CEM3310 based
 
 
*Formant music synthesizer by [[C. Chapman]], Elektor, 1978, p. 64, using [[Operational amplifier|op-amp]]s and common [[discrete]] components
 
*Formant music synthesizer by [[C. Chapman]], Elektor, 1978, p. 64, using [[Operational amplifier|op-amp]]s and common [[discrete]] components
 
*[http://yusynth.net/Modular/EN/ADSR/index.html yusynth ADSR] has a [[555]] core with a few op-amps.
 
*[http://yusynth.net/Modular/EN/ADSR/index.html yusynth ADSR] has a [[555]] core with a few op-amps.
  +
'''CEM IC based'''
 
*Digisound 80 [http://www.digisound80.co.uk/digisound/modules/80-10/80-10.htm 80-10 Voltage Controlled Envelope Generator], uses [[CEM3310]]. ''Electronic Music Circuits'' by [[Barry Klein]],1982, p. 62-3, includes [[Charles Blakey]]'s independent trigger input modification.
 
*Digisound 80 [http://www.digisound80.co.uk/digisound/modules/80-8/80-8.htm 80-8 Dual ADSR], uses CEM3310
 
*Digisound 80 [http://www.digisound80.co.uk/digisound/modules/80-18/80-18.htm 80-18 Dual Multi-Function Envelope Generator], uses CEM3310
   
 
[[Category:Synthesizer components]]
 
[[Category:Synthesizer components]]

Revision as of 12:17, 27 January 2013

An envelope generator is a device that produces an envelope voltage. When it controls a VCA these together form an envelope shaper.[1]

AD envelope generator

The envelope generator is usually triggered by a gate signal from the keyboard.[2]

Usage

For shorter envelopes at higher pitch, as happens in acoustic instruments, a master CV is taken from the same voltage as used for VCO pitch.[3]

See also

References

  1. ^ Synthesizers for musicians by R A Penfold, PC Publishing, 1989, ISBN 1870775015, p.21
  2. ^ Synthesizers.com Q109 Envelope Generator
  3. ^ Description of the Serge Extended ADSR Envelope Generator

External links

Kits

Schematics

Readily available analogue IC and discrete component based

CEM IC based