Operation Manual

6.14 Bowed String 80
considered to act perpendicularly to the motion of the beam. The third input is a pitch modulation
signal.
Typical Use. See Bowed Multimode module.
The default value of the following parameters is set during construction
• Length: the length, in meters, of the plate.
• Width: the width, in meters, of the plate.
• Frequency: fundamental frequency, in Hertz, of the plate when there is no pitch modulation
signal or when its value is equal to 0. Note that the fundamental frequency is independent of
the size of the plate. The software automatically calculates the physical parameters necessary
to obtain the required fundamental frequency. The default value of this parameter is 261.62
Hz which corresponds to the middle C (C3) of a piano keyboard. This setting is convenient
when controlling a Bowed Plate module with a Keyboard module.
• Decay: proportional to the decay time of the sound produced by the plate.
• Number of Modes: number of modes used to simulate the object. As the number of modes
is increased, the number of partials in the sound increases but also inevitably the calculation
load.
• Excitation point-x: x-coordinate, in meters, of bow from the lower left corner of the plate.
• Excitation point-y: y-coordinate, in meters, of bow from the lower left corner of the plate.
• Listening point-x: x-coordinate, in meters, of listening point from the lower left corner of the
plate. To obtain a proper functioning, the excitation and listening points should be the same.
• Listening point-y: y-coordinate, in meters, of listening point from the lower left corner of the
plate. To obtain a proper functioning, the excitation and listening points should be the same.
Note: For more details on this module and especially the front panel controls, see the Bowed
Multimode module.
6.14 Bowed String
The Bowed String module simulates sound production by bowed 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 Bowed Multimode module to simulate sound production by the string. The module has one
output, the sound produced by the string, and three inputs. The first input signal is the bow velocity
in the direction of the motion. The second input signal is a force signal which is considered to act
perpendicularly to the motion of the string. The third input is a pitch modulation signal.