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1. (WO2019028111) EFFICIENT REUTILIZATION OF ACOUSTIC ECHO CANCELER CHANNELS
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Pub. No.: WO/2019/028111 International Application No.: PCT/US2018/044760
Publication Date: 07.02.2019 International Filing Date: 01.08.2018
IPC:
H04M 9/08 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
M
TELEPHONIC COMMUNICATION
9
Arrangements for interconnection not involving centralised switching
08
Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
Applicants:
BOSE CORPORATION [US/US]; The Mountain Framingham, MA 01701-9168, US
Inventors:
HERA, Cristian, Marius; US
KATHAVARAYAN, Vigneish; US
VAUTIN, Jeffery, R.; US
BOU DAHER, Elie; US
ARGYROPOULOS, Paraskevas; US
Agent:
SMITH, Craig, R.; US
ANDREASEN, David, S.; US
Priority Data:
15/667,98803.08.2017US
Title (EN) EFFICIENT REUTILIZATION OF ACOUSTIC ECHO CANCELER CHANNELS
(FR) RÉUTILISATION EFFICACE DE CANAUX D'ANNULEUR D'ÉCHO ACOUSTIQUE
Abstract:
(EN) Audio systems and methods are provided to reduce echo content in an audio signal. The systems and methods receive an audio signal and sound stage rendering parameter(s), and select a set of filter coefficients to filter the audio signal to provide an estimated echo signal. The estimated echo signal is subtracted from a microphone signal to provide an output signal with reduced echo content. The set of filter coefficients are selected based upon the sound stage rendering parameter(s) from among a plurality of stored sets of filter coefficients.
(FR) L'invention concerne des systèmes et des procédés audio destinés à réduire le contenu d'écho dans un signal audio. Les systèmes et les procédés reçoivent un signal audio et un ou plusieurs paramètres de rendu d'étage sonore, et sélectionnent un ensemble de coefficients de filtrage pour filtrer le signal audio afin de fournir un signal d'écho estimé. Le signal d'écho estimé est soustrait d'un signal de microphone pour fournir un signal de sortie avec un contenu d'écho réduit. L'ensemble de coefficients de filtre est sélectionné sur la base du ou des paramètres de rendu d'étage sonore parmi une pluralité d'ensembles stockés de coefficients de filtre.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, 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, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)