Operation Manual

6.83 String 142
The default value of the following parameters is set at construction
• delay: time delay, in seconds, applied to the left and right input signals (values between [0,
92]ms).
• feedback: coefficient,[0, 1[, determining amount of “wet” signal re-injected into the delay
lines. If feedback = 0 there is no “wet” signal re-injected while if feedback = 0.99, maximum
of “wet” signal re-injected.
• depth: gain coefficient, [0,1], multiplying the modulation signal.
• mix: amount of “dry” and “wet” signal sent to left and right outputs. If mix = 0 there is only
dry signal while if mix =1, there is only “wet” signal.
Note: For typical uses, see Flanger module.
6.83 String
The String module simulates sound production by strings of different materials and sizes. This
module first calculates the modal parameters corresponding to string-shaped objects according to
the value of the different parameters requested at construction time and, next, calls the Multimode
module to simulate the sound. The module has one output, the sound produced by the string, and
three inputs. The first input signal is a damping signal which, depending on its value, lowers or
raises dampers on the structure. When the input signal is equal to 0, dampers are lowered on the
string, thus shortening the decay time of the sound produced by the structure. When the signal
is greater than 0, dampers are raised. Note that this damping adds to the natural damping of the
string itself. If this input is not connected to any other module, the default value is set at 0, which
implies that the string motion will be damped. This input is, therefore, usually connected to a
Constant module to obtain undamped motion or to a Damper module or the gate signal from a
Keyboard in order to vary the damping while playing. The second input signal is the force signal
exciting the string, and the third is a pitch signal which is multiplied by the gain corresponding to
the adjustment of the mod knob on the module front panel.
Typical Use
In the following example, the output from a String is filtered by a Plate module.
The default values of the following parameters is set at construction
• Length: the length, in meters, of the string.
• Frequency: fundamental frequency, in Hertz, of the string beam when there is no pitch mod-
ulation signal or when its value is equal to 0. Note that the fundamental frequency is in-
dependent of the length of the string. The software automatically calculates the physical