Local Generators - Alesis 2 Reference Manual

Chapter 6 - Advanced Applications
Target. This number can be set to 00 (for no effect) all the way to +99 (for maximum
effect) or down to -99 (for maximum negative effect; i.e., inverted control). If you have
been following along so far, let's continue where we left off from the last set of steps:
¿
After selecting the Target and Source, press [PAGE >] to advance to Modulation
Page 3.
The display will look like this:
MOD 1 AMPLITUDE: +0
The cursor appears beneath the Modulator, indicating that you can now turn the
[VALUE/ENTER] knob to select any of the 8 Modulators.
¡
Press the [PAGE >] button again to advance the cursor to the next field.
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Use the [VALUE/ENTER] knob to set the Modulator's amplitude from -99 to +99.

Local Generators

The QuadraVerb 2 is equipped with two Local Generators which can be used as
Modulation Sources. Each Local Generator can be set to either one of two types:
Input Envelope or Peak Follower. Both allow different ways of having the audio signal
at the QuadraVerb 2's inputs modulate the parameters of a Program. Both Local
Generators may be triggered by either the Left Input or Right Input, or both Left and
Right Inputs. They may also be triggered by the Digital Input, if Optical Data is selected
as the Input Audio Source (on Global Page 4).
Input Envelope. This uses an envelope, similar to the type found in most
synthesizers, which is triggered once the audio signal at the QuadraVerb 2's input(s)
exceeds the Attack Threshold you have chosen (-32 to 0dB). Once this happens, the
envelope opens up at a rate determined by the Attack Time (which can be set from
0.00–10.00 seconds). Once the input level has dipped down below the Release
Threshold (-50 to 0dB), the envelope closes at a rate determined by the Release
Time (0.00–10.00 seconds).
ON THRESHOLD
AUDIO PEAK INPUT
(Left or right Channel or
higher of left and right)
OFF THRESHOLD
MAX MODULATION
ENVELOPE OUTPUT
Peak Follower. The peak follower will follow the audio input to its loudest point
and, as the input level drops, the peak follower drops at a constant rate determined by
the Decay time (0.20–10.00 seconds). Once the input level exceeds the Peak
Follower's level, the Peak Follower is raised to accommodate the higher level, and
then (as the input signal again falls) proceeds to fall again using the same Decay time.
Since the input levels may be too low at times for the Peak Follower to have ample
effect, its Gain may be set to multiply the input's level from x1 to x99.
82
0
ATTACK TIME DECAY TIME
QuadraVerb 2 Reference Manual