4.7
The Envelope Module
33
seconds and is adjusted with the Delay knob. Note that this knob is effective even if the Fade value
is adjusted to zero. In this case, the signal from the LFO module will simply be delayed.
Time
Delay
Fade in
Amplitude
Figure 11: Fade in feature of the LFO.
4.7
The Envelope Module
Each row of the Ultra Analog is equipped with two enve-
lope generators, the Filter Env and Amp Env modules which
are used to modulate the Filter and Amp modules. Both en-
velope generators have the same user interface and offer the
same functions. Envelopes are generated through the use of a
standard ADSR (attack, decay, sustain, release) approach in-
cluding velocity modulation and looping capabilities.
A
D
S
R
Sustain Time
Time
Amplitude
Exp
Lin
Key Released
Figure 12: Response curve of an envelope generator. Broken line: exponential, full line: linear.