(19)

(11)

EP 0 556 300 A1

(12)

(43) Date of publication: 25.08.1993 Bulletin 1993/34 (21) Application number: 92900360.0 (22) Date of filing: 07.11.1991

(51) International Patent Classification (IPC):  H04R( . ) H04R 25/ 00( . ) H04R 25/ 02( . ) (86) International application number: PCT/US1991/008333 (87) International publication number: WO 1992/009181 (29.05.1992 Gazette 1992/12)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 07.11.1990 US 19900610274 (71) Applicant: RESOUND CORPORATION Redwood City, CA 94063 (US)	(72) Inventors: PERKINS, Rodney, C. Woodsite, CA 94062 (US) SHENNIB, Adnan, S. Fremont, CA 94555 (US) (74) Representative: Bowles, Sharon Margaret, et al  BOWLES HORTON Felden House Dower Mews High Street Berkhamsted Hertfordshire HP4 2BL Berkhamsted Hertfordshire HP4 2BL (GB)