Balanced-armature-type loudspeakers, predominantly used in hearing aids, are inherently nonlinear devices, as any displacement of the loudspeaker diaphragm inevitably changes the magnetic and electrical characteristics of the loudspeaker. A numerical time-domain model capable of describing these nonlinearities is developed. By simulation it is demonstrated how the output distortion could potentially be reduced significantly through careful design of the mechanical properties of the armature.

Authors: Jensen, Joe; Agerkvist, Finn T.; Harte, James M.
Affiliations: Institute of Acoustic Technology, Technical University of Denmark, Lyngby, Denmark; Centre for Applied Hearing Research (CAHR), Technical University of Denmark, Lyngby, Denmark(See document for exact affiliation information.)
JAES Volume 59 Issue 3 pp. 91-101; March 2011
Publication Date: April 18, 2011

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