Propagation of classical waves in one-dimensional disordered media: Characterization by a time-frequency method

Author

Richoux, O. ; Depollier, C. ; Hardy, J.

Author_Institution

Lab. d´´Acoust., Maine Univ., Le Mans, France

Volume

3

fYear

1999

fDate

1999

Firstpage

1441

Abstract

This paper presents an application of the time-frequency methods to characterize the dispersive mechanical waves traveling in a one-dimensional periodic or disordered medium. The dispersion characteristic is a relation between the wave number k and the frequency w: w=w(k) and is another way to express the theory of wave motion without partial differential equation. So, in order to investigate the propagation in complicated waveguides, time-frequency methods may be efficient tools

Keywords

dispersive media; elastic waves; nonlinear systems; time-frequency analysis; wave propagation; waveguide theory; 1D periodic medium; classical waves; disordered medium; dispersion characteristic; dispersive mechanical waves; harmonic pressure; one-dimensional disordered media; rectangular waveguide; time-frequency method; wave motion; Acoustic waveguides; Acoustic waves; Dispersion; Frequency measurement; Impedance; Lattices; Neck; Partial differential equations; Time frequency analysis; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on

Conference_Location

Pafos

Print_ISBN

0-7803-5682-9

Type

conf

DOI

10.1109/ICECS.1999.814440

Filename

814440