Microphone calibration with an RGSC beamformer

Details Microphone calibration with an RGSC beamformer Microphone calibration with an RGSC beamformer

2011-08-30

2011-08-30

Faulk, Devona E (Department: 2614)

Electrical audio signal processing systems and devices

Directive circuits for microphones

C381S094100, C381S071100, C381S122000

Reexamination Certificate

active

08009840

ABSTRACT:
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.

REFERENCES:
patent: 6449586 (2002-09-01), Hoshuyama
patent: 2005/0047611 (2005-03-01), Mao
patent: 2006/0147054 (2006-07-01), Buck et al.
patent: 2006/0222184 (2006-10-01), Buck et al.
patent: 2007/0055505 (2007-03-01), Doclo et al.
patent: 1478208 (2004-11-01), None
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.
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.

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