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Nonlinear time-domain modeling of balanced-armature receivers
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Jensen, Joe, Agerkvist, Finn T. and Harte, James M. (2011) Nonlinear time-domain modeling of balanced-armature receivers. AES, Vol.59 (No.3). pp. 91-101. ISSN 1549-4950.
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Abstract
Nonlinear distortion added by the loudspeaker in a hearing aid lowers the signal-to-noise ratio and may degrade the hearing aid user's ability to understand speech. The 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 presented. By simulation it is demonstrated how the output distortion could potentially be reduced significantly through careful design of the mechanical properties of the armature.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | AES | ||||
Publisher: | Audio Engineering Society | ||||
ISSN: | 1549-4950 | ||||
Official Date: | March 2011 | ||||
Dates: |
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Volume: | Vol.59 | ||||
Number: | No.3 | ||||
Page Range: | pp. 91-101 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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