(19)

(11)

EP 1 186 203 A2

(12)

(88) Date of publication A3: 12.07.2001 (43) Date of publication: 13.03.2002 Bulletin 2002/11 (21) Application number: 00935350.9 (22) Date of filing: 07.06.2000

(51) International Patent Classification (IPC)7: H04R 7/04, H04R 1/40 (86) International application number: PCT/GB0002/054 (87) International publication number: WO 0078/090 (21.12.2000 Gazette 2000/51)

(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: 10.06.1999 GB 9913465 (71) Applicant: New Transducers Limited London SW3 3QH (GB)	(72) Inventors: BANK, Graham Woodbridge,Suffolk IP12 4LS (GB) HARRIS, Neil Whittlesford,Cambridge CB2 4NL (GB) (74) Representative: Maguire, Peter Albert et al Maguire Boss,5 Crown Street St. Ives,Cambridgeshire PE27 5EB St. Ives,Cambridgeshire PE27 5EB (GB)