EP 1415506 A2 20040506 - SOUND PROCESSING SYSTEM THAT EXHIBITS ARBITRARY GRADIENT RESPONSE
Title (en)
SOUND PROCESSING SYSTEM THAT EXHIBITS ARBITRARY GRADIENT RESPONSE
Title (de)
KLANGPROZESSORSYSTEM WELCHE EINE WILLKÜRLICHE GRADIENT RESPONS AUFWEIST
Title (fr)
SYSTEME DE TRAITEMENT DU SON PRESENTANT UNE REPONSE DU GRADIENT ARBITRAIRE
Publication
Application
Priority
- EP 0209030 W 20020812
- US 92822901 A 20010810
Abstract (en)
[origin: WO03015459A2] A sound processing system including at least one microphone, an audio processor, and at least one output device. The audio processor includes an analog beamformer, a microphone equalizer, and an apparent incidence processor. Two different embodiments of the apparant incidence processor are disclosed, that is, a wave generation method and a forward filtering method. Both embodiments use the same principles to estimate the properties of the individual waves of the sound field. With the present invention, it is possible to implement arbitrary directivity responses using a small number of microphones only, that is, two or three microphones. The present invention offers improved noise reduction also for environments with many independent noise sources. Furthermore, the present invention works for signals and noises with arbitrary statistics.
IPC 1-7
IPC 8 full level
H04R 3/00 (2006.01); H04R 29/00 (2006.01); H04R 25/00 (2006.01)
CPC (source: EP)
H04R 3/005 (2013.01); H04R 29/006 (2013.01); H04R 25/407 (2013.01); H04R 2201/403 (2013.01)
Citation (search report)
See references of WO 03015459A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 03015459 A2 20030220; WO 03015459 A3 20031120; EP 1415506 A2 20040506
DOCDB simple family (application)
EP 0209030 W 20020812; EP 02767371 A 20020812