(19)

(11)

EP 1 125 473 A1

(12)

(43) Date of publication: 22.08.2001 Bulletin 2001/34 (21) Application number: 99952703.9 (22) Date of filing: 05.11.1999

(51) International Patent Classification (IPC)7: H04R 7/12, H04R 1/22, H04R 1/02, H04R 1/28 (86) International application number: PCT/GB9903/656 (87) International publication number: WO 0028/781 (18.05.2000 Gazette 2000/20)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 06.11.1998 GB 9824256 (71) Applicant: New Transducers Limited London SW3 3QH (GB)	(72) Inventor: HARRIS, Neil WhitlesfordCambridge CB2 4NL (GB) (74) Representative: Maguire, Peter Albert  Maguire & Co.5 Crown Street St. Ives, Cambridgeshire PE27 5EB St. Ives, Cambridgeshire PE27 5EB (GB)