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TEO-5 User’s Guide
About the Filter Envelope
About the Filter Envelope
Routing Envelope 1 or 2 to the Filter shapes the harmonic characteristics
of a synthesized sound by giving you ltering control with each of the
envelope stages (delay, attack, decay, sustain, release).
A lter envelope is one of the most important aspects of a synthesized
sound. Without an envelope, the lter would be static and unchanging. It
would stay open or closed by a xed amount that wouldn’t change over
the duration of a sound. That’s not very expressive or interesting to listen
to — and it’s not how most real-world instruments behave.
In general, sounds produced by an acoustic instrument are brighter at their
beginning (the attack stage) and grow mellower as they die out (the decay
and release stages). In other words, their harmonic content changes over
time. This is exactly what the lter envelope is designed to emulate.
Envelope 1 parameters
attack
decay
sustain
release
amplitude
time
note offnote on
delay
A typical 5-stage DADSR envelope
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