Bowing virtual strings

Author

Guérard, Jean ; Boutillon, Xavier

Author_Institution

Lab. d´´Acoust. Musicale, Univ. Pierre et Marie Curie, Paris, France

Volume

3

fYear

1996

fDate

7-10 May 1996

Firstpage

1755

Abstract

A virtual string has been designed with the association of a sensor, a real-time algorithm and a mechanical actuator. The force exerted by a real bow on a small surface is measured, the velocity that a real string would exhibit under this excitation is computed by a fast DSP-board and the corresponding motion is generated by the actuator at the bowed surface. Corrections are needed for taking into account the characteristics of these various elements. They are achieved by means of IIR filters designed with LMS optimizations. One finally observes the classical Helmholtz motion of the bowed string, although some stability problems may still to be overcome

Keywords

IIR filters; acoustic signal processing; actuators; bending; circuit optimisation; digital filters; electronic music; least mean squares methods; music; musical acoustics; musical instruments; pressure measurement; signal synthesis; IIR filters; LMS optimization; bowed surface; classical Helmholtz motion; fast DSP-board; force measurement; mechanical actuator; real-time algorithm; sensor; stability problems; string velocity; virtual strings bowing; Actuators; Algorithm design and analysis; Design optimization; Force measurement; Force sensors; IIR filters; Least squares approximation; Mechanical sensors; Motion measurement; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on

Conference_Location

Atlanta, GA

ISSN

1520-6149

Print_ISBN

0-7803-3192-3

Type

conf

DOI

10.1109/ICASSP.1996.544205

Filename

544205