EP 1653768 A3 20100602 - Method for reducing interference power in a directional microphone and corresponding acoustical system
Title (en)
Method for reducing interference power in a directional microphone and corresponding acoustical system
Title (de)
Verfahren zur Reduktion von Störleistungen bei einem Richtmikrophon und entsprechendes Akustiksystem
Title (fr)
Procédé pour réduire la puissance perturbatrice dans un microphone directionnel et système électro-acoustique correspondant
Publication
Application
Priority
DE 102004052912 A 20041102
Abstract (en)
[origin: EP1653768A2] The method involves adjusting the directivity by changing adaptation parameters such that a sum of interfering power consisting of microphone noise and radiated power of undesired signal sources is minimized as the output signal power of a directional microphone is minimized. The microphone is aligned in the given direction and a signal source is considered as undesired, when the source lies outside an angle around the given direction. An independent claim is also included for an acoustic system with a directional microphone.
IPC 8 full level
H04R 3/00 (2006.01); H04R 25/00 (2006.01)
CPC (source: EP US)
H04R 3/005 (2013.01 - EP US); H04R 25/407 (2013.01 - EP US)
Citation (search report)
- [XY] WO 0197558 A2 20011220 - GN RESOUND CORP [US]
- [Y] WO 0001200 A1 20000106 - UNIV STIRLING [GB], et al
- [AD] WO 0101731 A1 20010104 - TOEPHOLM & WESTERMANN [DK], et al
- [AD] DE 10327889 B3 20040916 - SIEMENS AUDIOLOGISCHE TECHNIK [DE]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1653768 A2 20060503; EP 1653768 A3 20100602; DE 102004052912 A1 20060511; US 2006104459 A1 20060518; US 8135142 B2 20120313
DOCDB simple family (application)
EP 05109462 A 20051012; DE 102004052912 A 20041102; US 26342905 A 20051031