(19)

(11)

EP 1 319 224 A2

(12)

(88) Date of publication A3: 27.06.2002 (43) Date of publication: 18.06.2003 Bulletin 2003/25 (21) Application number: 01957118.1 (22) Date of filing: 11.07.2001

(51) International Patent Classification (IPC)7: G10H 1/00 (86) International application number: PCT/US0121/755 (87) International publication number: WO 0200/5261 (17.01.2002 Gazette 2002/03)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 11.07.2000 US 217266 P (71) Applicant: American Technology Corporation San Diego, CA 92128 (US)	(72) Inventor: CROFT, James, J., III Poway, CA 92064 (US) (74) Representative: Lloyd, Patrick Alexander Desmond  Reddie & Grose16 Theobalds Road London WC1X 8PL London WC1X 8PL (GB)