Telephonic communications – Echo cancellation or suppression – Using digital signal processing
Reexamination Certificate
2004-08-10
2008-10-07
Tsang, Fan (Department: 2614)
Telephonic communications
Echo cancellation or suppression
Using digital signal processing
C379S406010, C379S406050, C379S406120, C379S406130
Reexamination Certificate
active
07433463
ABSTRACT:
A method and system for clear signal capture comprehend several individual aspects that address specific problems in improved ways. In addition, the method and system also comprehend a hands-free implementation that is a practical solution to a very complex problem. Individual aspects comprehended related to echo and noise reduction, and divergence control.
REFERENCES:
patent: 5937060 (1999-08-01), Oh
patent: 2004/0071284 (2004-04-01), Abutalebi et al.
patent: 2004/0218755 (2004-11-01), Marton et al.
Jeannes et al, “Combined Noise and Echo Reduction in Hands-Free Stsems: A Survey”, 2001, IEEE Trans. on Speech and Audio Processing, vol. 9, No. 3, Nov. 2001.
Schnaufer et al , “New Data-Reuse LMS Algorithms for Improved Convergence”, 1993, IEEE Conf. on Signals, Systsems and Computers, 27thAsilomar Conf. ACSSC-1993; Nov. 1-3, 1993; pp. 1584-1588, vol. 2.
Benesty et al, “On Data-Reuse Adaptive Algorithms” 2003, Int. Workshop on Acoustic and Noice Control (WAENC 2003) , Sep. 2003, Kyoto, Japan.
Chen, “Analysis of the Fast Data-Reuse NLMS Agorithm”, 1993, Dept. of Computer and Communication Engeering, Chienko Technology University.
“Coupled Adaptive Filters for Acoustic Echo Control and Noise Reduction”, R. Martin and J. Altenhoner, Inst.of Communication Systems and Data Processing (IND), Aachen University of Technology, Aachen, Germany, pp. 3043-3046, 1995.
Gustafsson S et al.: “Combined Acoustic Echo Control and Noise Reduction for Mobile Communications”, 5thEuropean Conference on Speech Communication and Technology, Eurospeech '97. Rhodes, Greece, Sep. 22-25, 1997, European Conference On Speech Communication and Technology. (Eurospeech), Grenoble: Esca, Fr., vol. 3 of 5 Sep. 22, 1997, pp. 1403-1406, XP001045084, Sec. 1.
Le Bouquin Jeannes et al.: “Combined Noise and Echo Reduction in Hands-Free Systems: A Survey” IEEE Transactions On Speech And Audio Processing, IEEE Inc. New York, US, vol. 9, No. 8, Nov. 2001, pp. 808-820, XP002335495, ISSN: 1063-6676, cited in the application Sections II, III and IV.A.
Faucon G et al.: “Echo and Noise Reduction for Hands-Free Terminals—State of the Art—”, 5thEuropean Conference On Speech Communication And Technology. Eurospeech '97. Rhodes, Greece, Sep. 22-25, 1997, European Conference on Speech Communication and Technology (Eurospeech), Grenoble : Esca, FR, vol. 5 of 5. Sep. 22, 1997, pp. 2423-2426, XP001045184 Section 3.2.
Scalart P et al.: “A System for Speech Enhancement in the Context of Hands-Free Radiotelephony With Combined Noise Reduction and Acoustic Echo Cancellation” Speech Communication, Elsevier Science Publishers, Amsterdam, NL, vol. 20, No. 3-4, Dec. 1996, pp. 203-214, XP004729885, ISSN: 0167-6393, Section 5.2.
Alves Rogerio G.
Yen Kuan-Chieh
Brooks & Kushman P.C.
Clarity Technologies Inc.
King Simon
Tsang Fan
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