links to schematics at http://hem.bredband.net/elmuced/eh30.htm are dead
(links to schematics at http://hem.bredband.net/elmuced/eh30.htm are dead) |
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*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
*[http://yusynth.net/Modular/EN/ADSR/index.html yusynth ADSR] has a [[555]] core with a few op-amps.
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