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1. (WO2018050787) ACTIVE NOISE CANCELLATION SYSTEM FOR HEADPHONE
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.:    WO/2018/050787    International Application No.:    PCT/EP2017/073212
Publication Date: 22.03.2018 International Filing Date: 14.09.2017
IPC:
H04R 1/10 (2006.01), H04R 1/1083
Applicants: AVATRONICS SÀRL [CH/CH]; Avenue Gratta-Paille 2 1018 Lausanne (CH)
Inventors: FARAHANISAMANI, Amirhooshang; (CH).
HEZAVEH, Jeyran; (CH).
TALEBI, Ali; (US)
Agent: REUTELER & CIE SA; Chemin de la Vuarpillière 29 CH-1260 Nyon (CH)
Priority Data:
62/395,447 16.09.2016 US
Title (EN) ACTIVE NOISE CANCELLATION SYSTEM FOR HEADPHONE
(FR) SYSTÈME D'ANNULATION ACTIVE DE BRUIT POUR CASQUE D'ÉCOUTE
Abstract: front page image
(EN)An active noise cancellation system (2) comprising an active noise cancellation circuit connected to a microphone (10) arranged to sense environmental noise, the active noise cancellation circuit comprising : - an analog-to-digital converter (ADC) (14) arranged to convert the sensed environmental noise to a digital environmental noise signal, - a prediction filter (16) configured for predicting a plurality D of inverted digital environmental noise samples and generating a digital inverted environmental noise signal, - a digital-to-analog converter (DAC) (24) to convert the digital inverted environmental noise signal to an analog inverted environmental noise signal for cancelling the environmental noise.
(FR)L'invention concerne un système (2) d'annulation active de bruit comportant un circuit d'annulation active de bruit relié à un microphone (10) disposé de façon à capter un bruit environnemental, le circuit d'annulation active de bruit comportant : -un convertisseur analogique-numérique (ADC) (14) disposé de façon à convertir le bruit environnemental capté en un signal numérique de bruit environnemental, -un filtre prédictif (16) configuré pour prédire une pluralité D d'échantillons numériques inversés de bruit environnemental et générer un signal numérique inversé de bruit environnemental, -un convertisseur numérique-analogique (DAC) (24) servant à convertir le signal numérique inversé de bruit environnemental en un signal analogique inversé de bruit environnemental pour annuler le bruit environnemental.
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 (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)