EP 1525776 A1 20050427 - DEVICE FOR CORRECTING THE LEVEL IN A WAVE FIELD SYNTHESIS SYSTEM
Title (en)
DEVICE FOR CORRECTING THE LEVEL IN A WAVE FIELD SYNTHESIS SYSTEM
Title (de)
VORRICHTUNG ZUM PEGEL-KORRIGIEREN IN EINEM WELLENFELDSYNTHESESYSTEM
Title (fr)
DISPOSITIF DE CORRECTION DE NIVEAU DANS UN SYSTEME DE SYNTHESE DE CHAMP D'ONDES
Publication
Application
Priority
- DE 10321986 A 20030515
- EP 2004005045 W 20040511
Abstract (en)
[origin: WO2004103024A1] The aim of the invention is to correct the level in a wave field synthesis system comprising a wave field synthesis module and a loudspeaker array for providing sound in a projection zone. Said aim is achieved by determining (100) a correction factor (104) based on a set-point amplitude state in a projection zone, said set-point amplitude state depending on a position of the virtual source or a type of virtual source while the real amplitude state in the projection zone depends on the component signals for the loudspeakers due to the virtual source. The determined correction factor (104) is fed to a device (106) which manipulates the audio signal associated with the virtual source before said audio signal is fed into the wave field synthesis module or manipulates the component signals for the individual loudspeakers due to the virtual source in order to reduce a deviation between a set-point amplitude state and a real amplitude state at one or several points in the projection zone such that level artifacts occurring as a result of the finite number of loudspeakers being used are at least decreased in a wave field synthesis system, resulting in a more pleasant sound experience for a listener.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H04S 3/002 (2013.01 - EP US); H04S 7/00 (2013.01 - EP US); H04S 2420/13 (2013.01 - EP US)
Citation (search report)
See references of WO 2004103024A1
Designated contracting state (EPC)
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
DOCDB simple family (publication)
WO 2004103024 A1 20041125; AT E324023 T1 20060515; CN 100551134 C 20091014; CN 1792117 A 20060621; DE 10321986 A1 20041209; DE 10321986 B4 20050714; DE 502004000439 D1 20060524; EP 1525776 A1 20050427; EP 1525776 B1 20060419; JP 2007502589 A 20070208; JP 4617311 B2 20110126; US 2006109992 A1 20060525; US 7751915 B2 20100706
DOCDB simple family (application)
EP 2004005045 W 20040511; AT 04739176 T 20040511; CN 200480013262 A 20040511; DE 10321986 A 20030515; DE 502004000439 T 20040511; EP 04739176 A 20040511; JP 2006529782 A 20040511; US 26317205 A 20051031