(19)

(11)

EP 1 179 284 A2

(12)

(88) Date of publication A3: 15.02.2001 (43) Date of publication: 13.02.2002 Bulletin 2002/07 (21) Application number: 00927539.7 (22) Date of filing: 12.05.2000

(51) International Patent Classification (IPC)7: H04R 7/06 (86) International application number: PCT/GB0001/751 (87) International publication number: WO 0070/909 (23.11.2000 Gazette 2000/47)

(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: 15.05.1999 GB 9911271 (71) Applicant: New Transducers Limited London SW3 3QH (GB)	(72) Inventors: AZIMA, Henry Cambridge CB2 2TT (GB) HARRIS, Neil Cambridge CB2 4NL (GB) DJAHANSOUZI, Bijan Huntingdon,Cambridgeshire PE19 5RF (GB) (74) Representative: Maguire, Peter Albert et al Maguire Boss, 5 Crown Street St. Ives, Cambridgeshire PE27 5EB St. Ives, Cambridgeshire PE27 5EB (GB)