AES E-Library

← Back to search

Theoretical and Experimental Comparison of Three Methods for Compensation of Electrodynamic Transducer Nonlinearity

Based on a simplified nonlinear lumped-element model of an electrodynamic loudspeaker, nonlinear compensators are derived, simulated, and implemented on a digital signal processor (DSP). The model comprises three major nonlinearities: voice-coil excursion dependent force factor, (suspension) stiffness, and self-inductance. A Volterra series expansion is used to estimate nonlinear parameters from distortion measurements. The first compensation method utilizes the second-order s-domain kernel of this expansion to synthesize a second-order compensator. The other two methods employ extended mirror filter and state-space techniques, respectively. All three approaches are compared with respect to needed dynamic elements, computational complexity, robustness, and effectiveness for the case of a low-frequency direct radiator in a closed cabinet.


Author (s):
Affiliation: (See document for exact affiliation information.)
Publication Date:


Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.

E-Libary location:
Choose your country of residence from this list:

Skip to content