Linear loudspeaker parameters are often estimated via fitting of transferfunctions, under the assumption of linearity. This paper investigates the corruption of the measurement caused by nonlinearities in the system; presents a new; improved method for separating the true linear response from the nonlinear components by analyzing a sequence of measurements done at different levels. The method is improved by analyzing the influence of the chosen measurement levels as well as the measurement time at each level; presents numerically optimal values for the most typical cases of nonlinear behaviour. While the influence of noise; nonlinear distortion can be eliminated completely in the case of finite orders of nonlinearities on the system, the method is also shown to provide improved accuracy in the more realistic case where all orders are present but only a finite number of them dominate.
My interest are loudspeakers (measurements, modelling, (nonlinear) parameter estimation, nonlinear compensation. Active noise control, indoor and outdoor sound field control
Saturday May 30, 2026 2:00pm - 2:30pm CEST Aud 43Technical University of Denmark Asmussens Alle, Building 303A DK-2800 Kgs. Lyngby Denmark
