Main content

Bibliographic data

Document US000007747001B2 (Pages: 11)

Bibliographic data Document US000007747001B2 (Pages: 11)
INID Criterion Field Contents
54 Title TI [EN] Speech signal processing with combined noise reduction and echo compensation
71/73 Applicant/owner PA NUANCE COMMUNICATIONS INC, US
72 Inventor IN HERBORDT WOLFGANG, DE ; KELLERMANN WALTER, DE
22/96 Application date AD Sep 2, 2005
21 Application number AN 21868705
Country of application AC US
Publication date PUB Jun 29, 2010
33
31
32
Priority data PRC
PRN
PRD
EP
04021055
20040903
51 IPC main class ICM H04M 9/08 (2006.01)
51 IPC secondary class ICS
IPC additional class ICA
IPC index class ICI
Cooperative patent classification CPC G10L 15/20
G10L 2021/02082
G10L 2021/02166
G10L 21/0208
H04M 9/082
MCD main class MCM H04M 9/08 (2006.01)
MCD secondary class MCS H04R 3/00 (2006.01)
MCD additional class MCA G10L 21/0208 (2013.01)
G10L 21/0216 (2013.01)
57 Abstract AB [EN] A speech signal processing system combines acoustic noise reduction and echo cancellation to enhance acoustic performance. The speech signal processing system may be used in vehicles or other environments where noise-suppressed communication is desirable. The system includes an adaptive beamforming signal processing unit, an adaptive echo compensating unit to reduce acoustic echoes, and an adaptation unit to combine noise reduction and adaptive echo compensating.
56 Cited documents identified in the search CT US000007035415B2
56 Cited documents indicated by the applicant CT EP000000204718B1
EP000001020068B1
GB000002355632A
WO001996026592A1
WO002001093554A2
56 Cited non-patent literature identified in the search CTNP Kristine L. Bell, Linearly Constrained Minimum Variance Beamforming with Quadratic pattern constraints for spatially spread Sources, Nov. 9-12, 2003, IEEE, Signals, Systems and Computers, Conference Record of the Thirty-Seventh Asilomar Conference, vol. 1, pp. 942-946. 0;
Rajiv Chandrasekaran, A constrained least-squares algorithm with data-adaptive beamforming and equalization for cochannel TDMA signals, Oct. 2000, Signal Processing, vol. 80, Issue 10, pp. 2033-2047. 0
56 Cited non-patent literature indicated by the applicant CTNP Brandstein, M. et al., "Microphone Arrays: Signal Processing Techniques and Applications", Chapter 13, Publisher Springer-Verlag, Berlin 2001, pp. 281-306. 1;
Buckley, K., "Broad-Band Beamforming and the Generalized Sidelobe Canceller", IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. 34, No. 5, Oct. 1986, pp. 1322-1323. 1;
Herbordt et al., "Computationally Efficient Frequency-Domain Combination of Acoustic Echo Cancellation and Robust Adaptive Beamforming," Eurospeech 2001-Scandanavia, vol. 2, 2001, p. 1001. 1;
Hoshuyama et al., "A Robust Adaptive Beamformer for Microphone Arrays With a Blocking Matrix Using Constrained Adaptive Filters," IEEE Transactions on Signal Processing, vol. 47, No. 10, Oct. 1999, pp. 2677-2684. 1;
Kellerman et al., "Strategies for Combining Acoustic Echo Cancellation and Adaptive Beamforming Microphone Arrays," Acoustics, Speech, and Signal Processing, 1997 IEEE International Conference on Munich, Germany, vol. 1, Apr. 21, 1997, pp. 219-222. 1;
Van Trees, H.L., "Optimum Array Processing, Part IV of Detection, Estimation and Modulation Theory", Publisher John Wiley & Sons, New York 2002, pp. 710-916. 1
Citing documents Determine documents
Sequence listings
Search file IPC ICP G10L 21/02
H04M 9/08