Electrical audio signal processing systems and devices – Noise or distortion suppression – Spectral adjustment
Reexamination Certificate
2011-08-23
2011-08-23
Faulk, Devona E (Department: 2614)
Electrical audio signal processing systems and devices
Noise or distortion suppression
Spectral adjustment
C381S092000, C381S094100, C381S094300, C367S118000, C367S119000, C704S226000, C704S233000
Reexamination Certificate
active
08005238
ABSTRACT:
A novel adaptive beamforming technique with enhanced noise suppression capability. The technique incorporates the sound-source presence probability into an adaptive blocking matrix. In one embodiment the sound-source presence probability is estimated based on the instantaneous direction of arrival of the input signals and voice activity detection. The technique guarantees robustness to steering vector errors without imposing ad hoc constraints on the adaptive filter coefficients. It can provide good suppression performance for both directional interference signals as well as isotropic ambient noise.
REFERENCES:
patent: 5493307 (1996-02-01), Tsijimoto
patent: 6771986 (2004-08-01), Oh
patent: 7035415 (2006-04-01), Belt et al.
patent: 7206418 (2007-04-01), Yang et al.
patent: 7206421 (2007-04-01), Taenzer
patent: 7254241 (2007-08-01), Rui et al.
patent: 7626889 (2009-12-01), Seltzer et al.
patent: 7689248 (2010-03-01), Valve et al.
patent: 7752040 (2010-07-01), Tashev et al.
patent: 7831036 (2010-11-01), Beaucoup et al.
patent: 2003/0026437 (2003-02-01), Janse et al.
patent: 2004/0001598 (2004-01-01), Balan et al.
patent: 2004/0170284 (2004-09-01), Janse et al.
patent: 2005/0141731 (2005-06-01), Hamalainen
patent: 2005/0149320 (2005-07-01), Kajala et al.
patent: 2005/0195988 (2005-09-01), Tashev et al.
patent: 2006/0133622 (2006-06-01), Chen
patent: 2006/0147054 (2006-07-01), Buck et al.
patent: 2006/0171547 (2006-08-01), Lokki et al.
patent: 2006/0286955 (2006-12-01), Yoshida et al.
patent: 2007/0076898 (2007-04-01), Sarroukh et al.
patent: 2007/0150268 (2007-06-01), Acero et al.
patent: WO-2005106841 (2005-11-01), None
Claesson, I., S. Nordholm, A spatial filtering approach to robust adaptive beamforming, IEEE Trans. on Antennas and Propagation, Sep. 1992, pp. 1093-1096, vol. 40, No. 9.
Cox, H., R. M. Zeskind, and M. M. Owen, Robust adaptive beamforming, IEEE Trans. on Acoustics, Speech and Signal Processing, 1987, pp. 1365-1376, vol. 35, No. 10.
Godara, L. C., Application of antenna arrays to mobile communications II. Beam-forming and direction-of-arrival considerations, Proceedings of the IEEE, Aug. 1997, pp. 1195-1245, vol. 85, No. 8, Institute of Electrical and Electronics Engineers, New York, NY.
Herbordt, W., W. Kellermann, Computationally efficient frequency-domain robust generalized sidelobe canceller, IEEE Workshop on Acoustic Echo and Noise Control (IWAENC), Sep. 2001, pp. 51-54, Darmstadt, Germany.
Hoshuyama, O., A. Sugiyama, and A. Hirano, A robust adaptive beamformer for microphone arrays with a blocking matrix using constrained adaptive filters, IEEE Trans. Signal Processing, vol. 47, No. 10, pp. 2677-2684, Oct. 1999.
Malvar, H. S., A modulated complex lapped transform and its applications to audio processing, Proc. ICASSP, Mar. 1999, pp. 1421-1424.
Sohn, J., N. S. Kim, W. Sung, A statistical model-based voice activity detection, IEEE Signal Processing Letters, Jan. 1999, pp. 1-3, vol. 6, No. 1.
Tashev, I., A. Acero, Microphone array post-processor using instantaneous direction of arrival, Int'l Workshop on Acoustic, Echo and Noise Control, IWAENC 2006, Sep. 2006, Paris, France.
Ivan Tashev, U.S. Appl. No. 11/750,319, May 17, 2007.
Ivan Tashev, U.S. Office Action, U.S. Appl. No. 11/750,319, Feb. 3, 2011.
Acero Alejandro
Tashev Ivan
Yoon Byung-Jun
Faulk Devona E
Lyon Katrina A.
Lyon & Harr LLP
Microsoft Corporation
Paul Disler
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