EP 2485504 B1 20131009 - Generation of quiet areas within the listener zone of multi-channel playback systems
Title (en)
Generation of quiet areas within the listener zone of multi-channel playback systems
Title (de)
Erzeugung von stillen Gebieten innerhalb der Zuhörerzone vielkanaliger Wiedergabesysteme
Title (fr)
Production de zones silencieuses à l'intérieur de la zone d'auditeurs d'un système de retransmission à plusieurs canaux
Publication
Application
Priority
EP 11153510 A 20110207
Abstract (en)
[origin: EP2485504A1] The method involves determining a desired wave field in a listening zone by using a spatial window function i.e. rectangular function, for forming wave-free sections on a wave field to be playback. Spatial folding of a spectrum of the wave field to be playback with the window function is performed in a spatial frequency region. Control signals for a loudspeaker are determined by a higher-order-ambisonics-method and a spectral division method for producing the desired wave field in the listening zone. The control signals are supplied to the loudspeaker. The desired wave field is band-limited. An independent claim is also included for a device for playback of an acoustic wave field in a listening zone.
IPC 8 full level
H04S 7/00 (2006.01)
CPC (source: EP)
H04S 7/30 (2013.01); H04R 2203/12 (2013.01); H04S 2420/11 (2013.01); H04S 2420/13 (2013.01)
Designated contracting state (EPC)
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
DOCDB simple family (publication)
DOCDB simple family (application)
EP 11153510 A 20110207