(19)
(11) EP 1 606 970 A1

(12)

(43) Date of publication:
21.12.2005 Bulletin 2005/51

(21) Application number: 04722112.2

(22) Date of filing: 19.03.2004
(51) International Patent Classification (IPC)7H04R 1/40, H04R 3/00
(86) International application number:
PCT/NL2004/000169
(87) International publication number:
WO 2004/084577 (30.09.2004 Gazette 2004/40)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 21.03.2003 EP 03075820

(71) Applicant: Technische Universiteit Delft
2628 BL Delft (NL)

(72) Inventors:
  • HULSEBOS, Edo, M.
    NL-3705 ZC Zeist (NL)
  • DE VRIES, Diemer
    NL-2651 WL Berkel en Rodenrijs (NL)
  • BOONE, Marinus, Marias
    NL-2715 NG Zoetermeer (NL)
  • SCHUURMANS, Thomas, J., G.
    NL-1012 GT Amsterdam (NL)

(74) Representative: van Westenbrugge, Andries 
Nederlandsch Octrooibureau Postbus 29720
2502 LS Den Haag
2502 LS Den Haag (NL)

   


(54) CIRCULAR MICROPHONE ARRAY FOR MULTI CHANNEL AUDIO RECORDING