A method for reducing distortion in a receiver

(19)

(11)

EP 1 241 919 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	16.07.2003 Bulletin 2003/29

(43)	Date of publication A2:
	18.09.2002 Bulletin 2002/38

(21)	Application number: 02251724.7

(22)	Date of filing: 12.03.2002

(51)	International Patent Classification (IPC)⁷: H04R 11/02, H04R 11/06, H04R 25/00

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

12.03.2001 US 275086 P
12.03.2001 US 95819

(71)	Applicant: Knowles Electronics, LLC
	Itasca, Illinois 60143 (US)

(72)	Inventor:
	Warren, Daniel Max Geneva, Illinois 60134 (US)

(74)	Representative: Dunlop, Brian Kenneth Charles et al
	c/o Wynne-Jones, Lainé & James 22 Rodney Road Cheltenham Gloucestershire GL50 1JJ Cheltenham Gloucestershire GL50 1JJ (GB)

(54)	A method for reducing distortion in a receiver

(57) A receiver, such as for use in a hearing aid, is disclosed. The receiver comprises a housing and a diaphragm assembly disposed within the housing. The diaphragm assembly acoustically divides the housing into a front volume and a back volume. The diaphragm assembly comprises a paddle having a perimeter, a flexible annulus connected to the paddle, and a diaphragm support, wherein the diaphragm support secures the perimeter of the annulus to the housing. The receiver further comprises a plurality of apertures in the diaphragm assembly, wherein the plurality of apertures provides an acoustic distortion of no greater than 2% THD.

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