(19)

(11)

EP 2 208 369 A2

(12)

(88) Date of publication A3: 15.04.2010 (43) Date of publication: 21.07.2010 Bulletin 2010/29 (21) Application number: 08844786.7 (22) Date of filing: 31.10.2008

(51) International Patent Classification (IPC):  H04S 7/00(2006.01) H04R 3/12(2006.01) (86) International application number: PCT/GB2008/003707 (87) International publication number: WO 2009/056858 (07.05.2009 Gazette 2009/19)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 31.10.2007 GB 0721313 (71) Applicant: Cambridge Mechatronics Limited Cowley Road Cambridge CB4 0WS (GB)	(72) Inventors: EASTON, Mark, George Cambridge CB5 8QE (GB) GREGORY, Thomas, Matthew Cambridgeshire CB23 7ZJ (GB) RICHARDS, David, Charles, Wilson Cambridgeshire CB4 6BL (GB) WINDLE, Paul, Raymond Cambridge, CB4 1PY (GB) (74) Representative: Roberts, Mark Peter  J.A. Kemp & Co. 14 South Square Gray's Inn London WC1R 5JJ London WC1R 5JJ (GB)