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Machine translation
1. (WO2011142722) A NOISE REDUCTION CIRCUIT WITH MONITORING FUNCTIONALITY
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2011/142722    International Application No.:    PCT/SG2011/000157
Publication Date: 17.11.2011 International Filing Date: 21.04.2011
IPC:
H04R 5/04 (2006.01), H04R 5/033 (2006.01)
Applicants: CREATIVE TECHNOLOGY LTD. [SG/SG]; 31 International Business Park Creative Resource Singapore 609921 (SG) (For All Designated States Except US).
CHEAH, Chee Sin [MY/SG]; (SG) (For US Only).
KOH, Huoy Ru, Rachel [SG/SG]; (SG) (For US Only).
NG, Boon Cheong, Raymond [SG/SG]; (SG) (For US Only)
Inventors: CHEAH, Chee Sin; (SG).
KOH, Huoy Ru, Rachel; (SG).
NG, Boon Cheong, Raymond; (SG)
Agent: POH, Chee Kian, Daniel; Marks & Clerk Singapore LLP Tanjong Pagar P.O. Box 636 Singapore 910816 (SG)
Priority Data:
12/780,720 14.05.2010 US
Title (EN) A NOISE REDUCTION CIRCUIT WITH MONITORING FUNCTIONALITY
(FR) CIRCUIT DE RÉDUCTION DE BRUIT DOTÉ D'UNE FONCTION DE CONTRÔLE
Abstract: front page image
(EN)A noise reduction circuit (200) for a headphone (100) is disclosed herein. In a described embodiment, the headphone (100) includes a speaker driver (110) and the circuit (200) comprises a microphone (112) configured to convert ambient sound into a corresponding electrical ambient signal and which is disposed adjacent to the speaker driver's diaphragm. The circuit (200) further includes an active noise reduction path configured to provide active noise reduction of the ambient sound based on the corresponding electrical ambient signal and a vocal signal compensation path configured to restore attenuated signals within the vocal range of the corresponding electrical ambient signal to increase audibility of vocal signals of the ambient sound. The circuit 200 also includes a switching device (204,210) arranged to selectively deliver the corresponding electrical ambient signal to the active noise reduction path or to the vocal signal compensation path.
(FR)La présente invention se rapporte à un circuit de réduction de bruit (200) pour un casque (100). Selon un mode de réalisation décrit, le casque (100) comprend un circuit d'attaque de haut-parleur (110) et le circuit (200) comprend un microphone (112) configuré pour convertir le son ambiant en un signal électrique ambiant correspondant, et qui est disposé de façon adjacente au diaphragme du circuit d'attaque de haut-parleur. Le circuit (200) comprend en outre un trajet de réduction de bruit active configuré pour réaliser une réduction de bruit active du son ambiant sur la base du signal électrique ambiant correspondant, et un trajet de compensation du signal vocal configuré pour restaurer les signaux atténués dans la plage vocale du signal électrique ambiant correspondant afin d'augmenter l'audibilité des signaux vocaux du son ambiant. Le circuit (200) comprend également un dispositif de commutation (204, 210) agencé pour transmettre sélectivement le signal électrique ambiant correspondant au trajet de réduction de bruit active ou au trajet de compensation du signal vocal.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, 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, PE, PG, PH, PL, PT, RO, RS, RU, 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, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, 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, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)