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1. (WO2009138754) ANTI-FEEDBACK DEVICE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/138754    International Application No.:    PCT/GB2009/001218
Publication Date: 19.11.2009 International Filing Date: 13.05.2009
IPC:
H04R 3/02 (2006.01)
Applicants: QUEEN MARY AND WESTFIELD COLLEGE [GB/GB]; Mile End Road London E1 4NS (GB) (For All Designated States Except US).
PEREZ GONZALEZ, Enrique [GB/GB]; (GB) (For US Only).
REISS, Joshua Daniel [GB/GB]; (GB) (For US Only)
Inventors: PEREZ GONZALEZ, Enrique; (GB).
REISS, Joshua Daniel; (GB)
Agent: WINDSOR, Louise; Fry Heath & Spence LLP The Gables Massetts Road Horley Surrey RH6 7DQ (GB)
Priority Data:
0808646.4 13.05.2008 GB
Title (EN) ANTI-FEEDBACK DEVICE
(FR) DISPOSITIF ANTI-LARSEN
Abstract: front page image
(EN)A feedback-prevention method for a system with a signal processor comprising the steps of inputting at least one reference signal (9); calculating a spectral model (11) of the system according to the or each reference signal; generating a preventative gain compensation factor (12) according to the spectral model of the system; applying the preventative gain compensation factor (16) to the input or output of the signal processor (2); and outputting a gain-compensated audio output (3).
(FR)L'invention porte sur un procédé de prévention d'effet Larsen pour un système comprenant un processeur de signal, ledit procédé comprenant les étapes consistant à entrer au moins un signal de référence (9); calculer un modèle spectral (11) du système conformément au ou à chaque signal de référence; générer un facteur de compensation de gain préventive (12) conformément au modèle spectral du système; appliquer le facteur de compensation de gain préventive (16) à l'entrée ou à la sortie du processeur de signal (2); et délivrer une sortie audio à gain compensé (3).
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, 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, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, 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: English (EN)
Filing Language: English (EN)