Title :
Adaptive linearization of a loudspeaker
Author :
Gao, Franklin X Y ; Snelgrove, W. Martin
Author_Institution :
Bell-Northern Res. Ltd., Verdun, Que., Canada
Abstract :
An application for adaptive nonlinear filters, adaptive linearization of a loudspeaker, is presented. An adaptive predistortion linearization scheme is used for linearizing a loudspeaker. A model of a direct radiator loudspeaker is developed and studied which takes into account two principal sources of nonlinear distortions: nonlinearity in the suspension system and inhomogeneity in the flux density. Based on this model, simulations of the proposed method were performed. The results show that nonlinear distortions of a loudspeaker can be reduced significantly
Keywords :
acoustic signal processing; adaptive filters; linearisation techniques; loudspeakers; adaptive nonlinear filters; direct radiator loudspeaker; flux density inhomogeneity; loudspeaker adaptive linearisation; nonlinear distortions; predistortion linearization; signal processing; suspension system nonlinearity; Adaptive filters; Delay; Feedback; Frequency; Inverse problems; Loudspeakers; Nonlinear distortion; Nonlinear filters; Nonlinear systems; Signal processing;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.150251
