Verification of chaotic behavior in an experimental loudspeaker.
The dynamics of an experimental electrodynamic loudspeaker is studied by using the tools of chaos theory and time series analysis. Delay time, embedding dimension, fractal dimension, and other empirical quantities are determined from experimental data. Particular attention is paid to issues of stationarity in a system in order to identify sources of uncertainty. Lyapunov exponents and fractal dimension are measured using several independent techniques. Results are compared in order to establish independent confirmation of low dimensional dynamics and a positive dominant Lyapunov exponent. We thus show that the loudspeaker may function as a chaotic system suitable for low dimensional modeling and the application of chaos control techniques.
Reiss
Joshua D
JD
Department of Electronic Engineering, Queen Mary, University of London, Mile End Road, London E14NS, United Kingdom.
Djurek
Ivan
I
Petosic
Antonio
A
Djurek
Danijel
D
D000162:Acoustics / Q000295:instrumentation*; D000669:Amplifiers, Electronic; D017097:Electric Impedance; D004867:Equipment Design; D017709:Fractals; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D011312:Pressure; D013016:Sound; D013997:Time Factors; D014732:Vibration