Vir2 Instruments BASiS - Manual (Page 13)

13 BASiS
The Distortion effect allows you to simulate an overdriven amplifier. Individual con-
trols are available to adjust the drive amount (CC#57), damping amount (CC#58),
output volume (CC#56), and master on/off switch (CC#55).
The Limiter is enabled on all instruments by default, and protects the master output
level from exceeding 0dB. A limiter is essentially a compressor which is compressing
at a ratio of infinity to one. Individual controls are available to adjust the input gain
(CC#61), release time (CC#62), output level (CC#60), and master on/off switch
(CC#59). We recommend that the output gain not go any higher than 0dB, because
that will virtually guarantee signal overload.
Send Levels control the amount of signal that are sent to the final five effects
(Phaser, Flanger, Chorus, Delay, and Reverb). While they default to 0dB, their effects
are not heard until you switch the individual effect on. It is also possible to bypass
all send effects at once by deactivating the Active button on the Send Levels page
(or by moving CC#65 to a value lower than 64). Individual send levels can be adjust-
ed via MIDI CC's: Phaser (CC#66), Flanger (CC#67), Chorus (CC#68), Delay (CC#69),
and Reverb (CC#70).
The Phaser is an effect that continuously changes the phase relationships of the
bass around an all-pass filter, resulting in a comb filtering effect. Individual controls
are available to adjust the depth (CC#73), speed (CC#74), phase (CC#75), feedback
(CC#76), return level (CC#72), and master on/off switch (CC#71)
The Flanger is a similar effect to the Phaser. It splits the instrument's signal, then
delays one version in relation to the other by a tiny amount of time. By recombining
the two splits, the Flanger outputs a classic flanged sound. Individual controls are
available for depth (CC#79), speed (CC#80), phase (CC#81), color (CC#82), feedback
(CC#83), return level (CC#78), and master on/off switch (CC#77).
The Chorus provides a thickening effect achieved by doubling the instrument then
detuning the copy slightly.Individual controls are available for depth (CC#86),speed
(CC#87), phase (CC#88), return level (CC#85), and master on/off switch (CC#84).
Reverb simulates a real acoustic space and places the instrument inside a virtual
room, complete with reflections and spaciousness. Individual controls are available
for predelay (CC#91), size (CC#92), color (CC#93), damping (CC#94), stereo width
(CC#95), return level (CC#90), and master on/off switch (CC#89).
Delay provides an echo to the sound at a constant time measured in milliseconds.