Envelope generator

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An exemplary block diagram of a synthesizer having two envelope generators. EG1 is responsible for shaping the filter envelope, while EG2 is responsible for shaping the amplitude of the signal over time.

Envelope Generator (EG, ENV, Envelope Generator) - A synthesizer block or other electronic musical instrument responsible for producing a sound envelope.

The envelope generator, in addition to shaping the amplitude over time, can also control other instrument modules, such as a filter. In some cases, this device is equipped with a trigger output (producing a short trigger pulse) which allows for additional effects. The EG can be implemented both hardware (as an electronic circuit) and as a software. Envelope models Figure of typical ADSR envelope.

The most popular envelope model used in synthesizers is ADSR (acronyms for Attack, Decay, Sustain, Release). Its operation, on the example of the key synthesizer, is as follows:

There are also other envelope construction models, such as:

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