(19)

(11)

EP 1 147 680 A2

(12)

(88) Date of publication A3: 11.01.2001 (43) Date of publication: 24.10.2001 Bulletin 2001/43 (21) Application number: 00902717.8 (22) Date of filing: 07.02.2000

(51) International Patent Classification (IPC)7: H04R 1/10, H04R 5/033, H04R 7/06 (86) International application number: PCT/GB0000/331 (87) International publication number: WO 0046/786 (10.08.2000 Gazette 2000/32)

(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: 05.02.1999 GB 9902442 (71) Applicant: New Transducers Limited London SW3 3QH (GB)	(72) Inventors: AZIMA, Henry Cambridge CB2 2TT (GB) COLLOMS, Martin London NW2 2DA (GB) MORECROFT, Denis Cambridgeshire PE29 3QD (GB) (74) Representative: Maguire, Peter Albert et al Maguire Boss,5 Crown Street St. Ives,Cambridgeshire PE27 5EB St. Ives,Cambridgeshire PE27 5EB (GB)