(19)
(11) EP 2 647 001 A2

(12)

(88) Date of publication A3:
15.11.2012

(43) Date of publication:
09.10.2013 Bulletin 2013/41

(21) Application number: 11797371.9

(22) Date of filing: 01.12.2011
(51) International Patent Classification (IPC): 
G10K 11/178(2006.01)
(86) International application number:
PCT/NL2011/050828
(87) International publication number:
WO 2012/074403 (07.06.2012 Gazette 2012/23)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 01.12.2010 EP 10193244

(71) Applicant: Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO
2628 VK Delft (NL)

(72) Inventors:
  • BERKHOFF, Arthur Perry
    NL-2628 VK Delft (NL)
  • WESSELINK, Johan
    NL-2628 VKDelft (NL)

(74) Representative: Jansen, Cornelis Marinus et al
V.O. Johan de Wittlaan 7
2517 JR Den Haag
2517 JR Den Haag (NL)

   


(54) ACTIVE NOISE REDUCING FILTER APPARATUS, AND A METHOD OF MANUFACTURING SUCH AN APPARATUS