EP 2551849 A1 20130130 - Off-axis audio suppression in an automobile cabin
Title (en)
Off-axis audio suppression in an automobile cabin
Title (de)
Außerachsige Geräuschunterdrückung im Führerraum eines Kraftfahrzeugs
Title (fr)
Suppression audio désaxée dans une cabine automobile
Publication
Application
Priority
EP 11175926 A 20110729
Abstract (en)
The suppression of off-axis audio in an audio environment is provided. Off-axis audio may be considered audio that does not originate from a region of interest. The off-axis audio is suppressed by comparing a phase difference between signals from two microphones to a target slope of the phase difference between signals originating from the region of interest. The target slope can be adapted to allow the region of interest to move with the location of a human speaker such as a driver.
IPC 8 full level
G10L 21/02 (2013.01); H04R 3/00 (2006.01)
CPC (source: EP)
G10L 21/0208 (2013.01); H04R 3/005 (2013.01); G10L 2021/02166 (2013.01); H04R 2410/05 (2013.01); H04R 2499/13 (2013.01); H04S 7/303 (2013.01)
Citation (search report)
- [XY] US 2011158426 A1 20110630 - MATSUO NAOSHI [JP]
- [Y] EP 2197219 A1 20100616 - HARMAN BECKER AUTOMOTIVE SYS [DE]
- [A] US 5581620 A 19961203 - BRANDSTEIN MICHAEL S [US], et al
- [A] EP 1887831 A2 20080213 - FUJITSU LTD [JP]
- [A] US 2010110834 A1 20100506 - KIM KYU-HONG [KR], et al
- [A] US 2007274536 A1 20071129 - MATSUO NAOSHI [JP]
- [A] EP 1701587 A2 20060913 - TOSHIBA KK [JP]
- [A] HAMID AL-NASHI: "PHASE UMWRAPPING OF DIGITAL SIGNALS", IEEE TRANSACTIONS ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, IEEE INC. NEW YORK, USA, vol. 37, no. 11, 1 November 1989 (1989-11-01), pages 1693 - 1702, XP000074458, ISSN: 0096-3518, DOI: 10.1109/29.46552
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2551849 A1 20130130; CA 2783913 A1 20130129; CA 2783913 C 20160126
DOCDB simple family (application)
EP 11175926 A 20110729; CA 2783913 A 20120730