engleski

Modeling of an Electrodynamic Loudspeaker Using Runge-Kutta ODE Solver

The modeling of low frequency (<100Hz) electrodynamic loudspeaker is presented as one degree of freedom nonlinear damped oscillator described by an ordinary differential equation of motion. The model has been compared to an equivalent LRC circuit model, and it was shown that differential the equation approach is more suitable for calculations that include nonlinearities occurring in an electrodynamic loudspeaker, as well as couplings of different vibration modes, particularly those coming from vibrating air and the loudspeaker itself. The nonlinear differential equation of periodically driven anharmonic oscillator was solved numerically, and calculated amplitude frequency dependence and electric impedance have been compared to the experimental data. Calculations included different working regimes of the loudspeaker being operated in an evacuated space and air.

Loudspeaker; model; Runge-Kutta ODE Solver

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