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1. (WO2019067718) HOWL DETECTION IN CONFERENCE SYSTEMS
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Pub. No.: WO/2019/067718 International Application No.: PCT/US2018/053119
Publication Date: 04.04.2019 International Filing Date: 27.09.2018
IPC:
H04R 3/02 (2006.01) ,H04M 9/08 (2006.01) ,H04M 3/56 (2006.01) ,G10L 25/48 (2013.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3
Circuits for transducers
02
for preventing acoustic reaction
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
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
M
TELEPHONIC COMMUNICATION
3
Automatic or semi-automatic exchanges
42
Systems providing special services or facilities to subscribers
56
Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
L
SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
25
Speech or voice analysis techniques not restricted to a single one of groups G10L15/-G10L21/129
48
specially adapted for particular use
Applicants:
DOLBY LABORATORIES LICENSING CORPORATION [US/US]; 1275 Market Street San Francisco, California 94103, US
Inventors:
LI, Kai; US
GUNAWAN, David; US
DENG, Feng; CN
FANG, Qianqian; US
Agent:
MA, Xin; US
ANDERSEN, Robert L.; US
BOSE, Subroto; US
BROWN, Tyrome Y.; US
DUNCAN, Dennis John; US
HOGLUND, Heath; US
KONSTANTINIDES, Konstantinos; US
MACK, Kevin J.; US
YON, Sanghyok; US
TANASE, Iuliana; US
DOLBY INTERNATIONAL AB PATENT GROUP EUROPE; Apollo Building, 3E Herikerbergweg 1-35 1101 CN Amsterdam Zuidoost, NL
Priority Data:
17201011.810.11.2017EP
62/575,70123.10.2017US
PCT/CN2017/10460429.09.2017CN
Title (EN) HOWL DETECTION IN CONFERENCE SYSTEMS
(FR) DÉTECTION DE RÉACTION ACOUSTIQUE DANS DES SYSTÈMES DE CONFÉRENCE
Abstract:
(EN) The disclosed teleconferencing methods involve detecting a howl state during a teleconference which involves two or more teleconference client locations and a teleconference server. The teleconference server is configured for providing full-duplex audio connectivity between the teleconference client locations. The howl state is a state of acoustic feedback involving two or more teleconference devices in a teleconference client location. Detecting the howl state involves an analysis of both spectral and temporal characteristics of teleconference audio data. The disclosed teleconferencing methods involve determining which client location is causing the howl state and involve mitigating the howl state or sending a howl state detection message.
(FR) Selon l'invention, certains procédés de téléconférence peuvent consister à détecter un état de réaction acoustique pendant une téléconférence. La téléconférence peut impliquer au moins deux emplacements de clients de téléconférence et un serveur de téléconférence. Le serveur de téléconférence peut être configuré pour fournir une connectivité audio en duplex intégral entre les emplacements de clients de téléconférence. L'état de réaction acoustique peut être un état de rétroaction acoustique impliquant au moins deux dispositifs de téléconférence dans un emplacement de client de téléconférence. La détection de l'état de réaction acoustique peut impliquer une analyse des caractéristiques spectrales et temporelles des données audio de téléconférence. Certains procédés de téléconférence de l'invention peuvent consister à déterminer quel emplacement de client amène l'état de réaction acoustique Certains de ces procédés peuvent consister à atténuer l'état de réaction acoustique et/ou envoyer un message de détection d'état de réaction acoustique.
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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)