The Extended ADSR is a complex envelope generator that not only uses the four-segment envelope normally encountered in synthesizers, but is designed with extra features such as an initial voltage controllable delay time, voltage control of each segment, switchable slope forms, and a master voltage control. Each segment may be manually set and voltage controlled. In addition to the normal Attach, Decay, Sustain, and Release segments, an Initial Delay time is included. A master 1V/OCT in/out allows to control all slope times for effects such as decreasing the entire envelope time as the pitch of an associated oscillator increases - a phenomenon is typical of many acoustic instruments.

The Equal Power Stereo Mixer / Panner by Random*Source is designed to emulate the behaviour of the famous Serge VCAs. It uses some of the best audio components available today including THAT2180 VCA chips. Version 1.1 contains a number of additions and improvements that were adopted in surface mounted technology (SMT):

http://randomsource.net/serge_4x4?mod=RS_ADSRSM4X4

Available as an assembled Module and as a DIY project.

This Module is an early prototype, a concept in development, or an AI mockup