LinPlug SaxLab - Manual (Page 27)

The LFO’s MIDI controller implementation may at first seem complicated
however its operation has been designed with the following scenario in mind.
The user first sets the balance between the Pitch and AMP controls with the
Pitch and AMP controls. Then the default LFO frequency is set with the Rate
control. If the user then selects the Modulation Wheel as the Controller
Source they can bring in the LFO, increase its modulation depth,
(proportionally for Pitch and AMP), while accelerating the LFO rate from the
setting of the Rate control to the maximum value set by the combination of the
Rate control and the CTD (Controller Depth). This is a more realistic way to
create vibrato, starting from zero, and increasing the rate and depth, until the
intended level of intensity is reached. In this way, the user can quickly move
from different amounts of vibrato at any speed they desire.
Deviation
SaxLab 2’s Deviation section is located in the lower middle of the instrument’s
Front Panel. An important part of the sound of a real acoustic instrument is
that no two notes are exactly the same. No matter how hard the player may
try, each note is slightly different. Our ears are very sensitive to these
differences and can usually detect when two notes are identical. For this
reason, SaxLab incorporates Body, Air and Pitch Deviation controls which
introduce small random variations to the Body filter, the “air” layer of the
sound, and to the overall pitch of a note each time it is triggered.
SaxLab 2.1.6 User Manual Page 27