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1. (WO2003061344) MULTICHANNEL ECHO CANCELLER SYSTEM USING ACTIVE AUDIO MATRIX COEFFICIENTS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2003/061344    International Application No.:    PCT/IB2002/005271
Publication Date: 24.07.2003 International Filing Date: 09.12.2002
IPC:
H04S 3/02 (2006.01)
Applicants: KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL/NL]; Groenewoudseweg 1, NL-5621 BA Eindhoven (NL) (AE, AG, AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, BZ, CA, CF, CG, CH, CI, CM, CN, CO, CR, CU, CY, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GW, HR, HU, ID, IE, IL, IN, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MC, MD, MG, MK, ML, MN, MR, MW, MX, MZ, NE, NI, NL, NO, NZ, OM, PH, PL, PT, RO, RU, SC, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, YU, ZA, ZM, ZW only).
SCHOBBEN, Daniel, W., E. [NL/NL]; (NL) (For US Only).
EGELMEERS, Gerardus, P., M. [NL/NL]; (NL) (For US Only)
Inventors: SCHOBBEN, Daniel, W., E.; (NL).
EGELMEERS, Gerardus, P., M.; (NL)
Agent: GROENENDAAL, Antonius, W., M.; Philips Intellectual Property & Standards, Prof. Holstlaan 6, NL-5656 AA Eindhoven (NL)
Priority Data:
02075198.8 17.01.2002 EP
Title (EN) MULTICHANNEL ECHO CANCELLER SYSTEM USING ACTIVE AUDIO MATRIX COEFFICIENTS
(FR) SYSTEME D'ANNULATION D'ECHO MULTIVOIES FAISANT INTERVENIR DES COEFFICIENTS DE MATRICE AUDIO ACTIVE
Abstract: front page image
(EN)An echo canceller system is described, which comprises an audio matrix decoder coupled to audio inputs for providing multiple audio output signals, and a multi-channel echo canceller coupled to the audio inputs. The echo canceller system further comprises audio receiving means for receiving a mixture of the audio output signals and a wanted signal. The multi-channel echo canceller is coupled to the audio matrix decoder for using the audio matrix coefficients with multi-channel echo cancellation for deriving the wanted signal from the mixture. The computational and audio processing complexity of such a system is reduced.
(FR)L'invention concerne un système d'annulation d'écho qui comprend: un décodeur de matrice audio couplé à des entrées audio, permettant de fournir plusieurs signaux de sortie audio; et un annuleur d'écho multivoies couplé auxdites entrées audio. Ce système d'annulation d'écho comprend en outre un moyen de réception audio permettant de recevoir un mélange de signaux de sortie audio et un signal recherché. Ledit annuleur d'écho multivoies est couplé audit décodeur de matrice audio pour permettre l'utilisation de coefficients de matrice audio avec l'annulation d'écho multivoies de manière à dériver le signal recherché dudit mélange. L'invention permet de réduire la complexité de traitement audio et computationnelle dudit système.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NI, NO, NZ, OM, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)