(19)

(11)

EP 1 685 741 A1

(12)

(43) Date of publication: 02.08.2006 Bulletin 2006/31 (21) Application number: 04798520.5 (22) Date of filing: 16.11.2004

(51) International Patent Classification (IPC):  H04R 1/34(2006.01) H04M 1/03(2006.01) H04R 1/30(2006.01) H04R 5/02(2006.01) H04R 1/28(2006.01) (86) International application number: PCT/GB2004/004800 (87) International publication number: WO 2005/051037 (02.06.2005 Gazette 2005/22)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 18.11.2003 GB 0326807 (71) Applicant: Sonaptic Limited High Wycombe Buckinghamshire HP12 3RE (GB)	(72) Inventor: SIBBALD, Alastair Sonaptic Limited Chancery Buckinghamshire HP12 8RE (GB) (74) Representative: Marsh, Robin Geoffrey  5 St. Martins Close Lower Earley Reading Berkshire RG6 4BS Lower Earley Reading Berkshire RG6 4BS (GB)