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Machine translation
1. (WO2007006920) METHOD AND DEVICE FOR PROCESSING STRONG ECHOES, IN PARTICULAR IN HANDSFREE TELEPHONE TERMINALS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2007/006920    International Application No.:    PCT/FR2006/001608
Publication Date: 18.01.2007 International Filing Date: 05.07.2006
IPC:
H04M 9/00 (2006.01), H04M 9/08 (2006.01)
Applicants: FRANCE TELECOM [FR/FR]; 6, place d'Alleray, F-75015 Paris (FR) (For All Designated States Except US).
LE TOURNEUR, Grégoire [FR/FR]; (FR) (For US Only).
THOMAS, Jean-Philippe [FR/FR]; (FR) (For US Only).
GARCIA, Jean-Luc [FR/FR]; (FR) (For US Only)
Inventors: LE TOURNEUR, Grégoire; (FR).
THOMAS, Jean-Philippe; (FR).
GARCIA, Jean-Luc; (FR)
Agent: HASSINE, Albert; Cabinet Plasseraud, 52 rue de la Victoire, F-75440 Paris Cedex 9 (FR)
Priority Data:
0507384 11.07.2005 FR
Title (EN) METHOD AND DEVICE FOR PROCESSING STRONG ECHOES, IN PARTICULAR IN HANDSFREE TELEPHONE TERMINALS
(FR) PROCEDE ET DISPOSITIF DE TRAITEMENT D'ECHOS FORTS, NOTAMMENT DANS DES TERMINAUX TELEPHONIQUES EN 'MAINS LIBRES'
Abstract: front page image
(EN)The invention relates to processing echoes in telephone and/or videophone units, wherein a strong echo can cause an interaction between a loud speaker and a microphone. For identifying a strong echo risk, the inventive method consists in jointly detecting a strong attack (32), greater than a predetermined threshold, on a signal feeding the loud speaker (HP) and a low level (33) which is less than a selected threshold of a signal transmitted by the microphone (Mic).
(FR)L'invention concerne le traitement d'échos destiné à un équipement de téléphonie et/ou de visiophone, dans lequel un écho fort est susceptible de résulter d'une interaction entre un haut-parleur et un microphone. L'invention prévoit alors, pour identifier un risque d'écho fort, la détection conjointe : d'une attaque forte (32), supérieure à un seuil prédéterminé, sur un signal alimentant le haut-parleur (HP) ; et d'un niveau bas (33), inférieur à un seuil choisi, d'un signal issu du microphone (Mic).
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, 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, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, 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: French (FR)
Filing Language: French (FR)