Bibliographic data

Document US000008009840B2 (Pages: 8)

Bibliographic data Document US000008009840B2 (Pages: 8)
INID Criterion Field Contents
54 Title TI [EN] Microphone calibration with an RGSC beamformer
71/73 Applicant/owner PA SIEMENS AUDIOLOGISCHE TECHNIK, DE
72 Inventor IN KELLERMANN WALTER, DE ; OAK PARIJAT ASHOK, IN
22/96 Application date AD Sep 29, 2006
21 Application number AN 54141406
Country of application AC US
Publication date PUB Aug 30, 2011
33
31
32		 Priority data PRC
PRN
PRD		 DE
102005047047
20050930
51 IPC main class ICM H04R 3/00 (2006.01)
51 IPC secondary class ICS
IPC additional class ICA
IPC index class ICI
Cooperative patent classification CPC H04R 2430/25
H04R 29/006
H04R 3/005
MCD main class MCM H04R 3/00 (2006.01)
MCD secondary class MCS
MCD additional class MCA
57 Abstract AB [EN] It is intended to improve and automate the calculation of calibration filters connected downstream from the microphones of an RGSC beamformer. To this end it is proposed that an adaptive calibration filter calculation unit be used, by means of which calibration filters are calculated from the output signals of adaptive blocking filters such that the power of an output signal of a blocking filter subtracted from a reference signal and filtered by means of a calibration filter respectively is minimized. The calibration filters connected downstream from the microphones are then replaced by the calibration filters thus determined.
56 Cited documents identified in the search CT US000006449586B1
US020050047611A1
US020060147054A1
US020060222184A1
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56 Cited documents indicated by the applicant CT EP000001478208A1
56 Cited non-patent literature identified in the search CTNP Wolfgang Herbordt, Combination of Robust Adaptive Beamforming with Acoustic ECho Cancellation for Acoustic Human/Machies Interfaces, Dec. 2003, University of Erlangen-Nuerenberg, pp. 98-105. Provided by applicant. 0
56 Cited non-patent literature indicated by the applicant CTNP Wolfgang Herbordt, "Combination of Robust Adaptive Beamforming with Acoustic Echo Cancellation for Acoustic Human/Machine Interfaces", Dissertation, Dec. 3, 2003, pp. 98-105, Friedrich-Alexander University, Erlangen/Nümberg, Germany. 1
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