Operation Manual

4.6 The Termination Module 35
set your synth or MIDI controller to send its sustain pedal signal via this MIDI Control Change
message.
Damping
Mass
Stiffness
Velocity
Figure 15: Functioning of the Damper
4.6 The Termination Module
This module is used to model the fret/finger/string interac-
tion as illustrated in Figure 16. In a real instrument, this inter-
action is used to change the effective length of the string and
thereby fix the pitch of the note played. The physical parame-
ters of the Finger can be varied with both the Stiff and Force
knobs which fix respectively the stiffness of the termination and
the force it applies on the string. Note that the Force parameter
can be modulated by both the pitch and velocity signal from the
Keyboard module. The termination can further be character-
ized by the stiffness of the fret on which the string, pushed by the finger, is applied. This parameter
is controlled by the Stiff knob under the Fret label.
4.7 The Geometry Module
The Geometry module is used to set the location of the point
of action of both the excitator and the damper on the string. These
positions are adjusted with the Position knobs under the Excitator and
Damper labels and can be set to any value between zero (the point of
fixation of the string) and half the length of the string (value of 0.5).
When the Abs (absolute position) LED is switched on, the posi-
tion of the excitator or the damper is fixed whatever the note played.
This would be the case, for example, on a guitar when the player keeps the position of the pick
fixed while varying the effective length of the string when changing notes. The actual position is