WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO2004002383) NOISE CANCELLATION SYSTEM AND HEADPHONE THEREFOR
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/002383    International Application No.:    PCT/NZ2003/000134
Publication Date: 08.01.2004 International Filing Date: 26.06.2003
Chapter 2 Demand Filed:    10.12.2003    
IPC:
H04R 3/00 (2006.01), H04R 5/033 (2006.01)
Applicants: PHITEK SYSTEMS LIMITED [NZ/NZ]; Level 1, HB Building, 228 Queen Street, AUCKLAND (NZ) (For All Designated States Except US).
DONALDSON, Mark [NZ/NZ]; (NZ) (For US Only).
FULLER, Graeme, Colin [NZ/NZ]; (NZ) (For US Only)
Inventors: DONALDSON, Mark; (NZ).
FULLER, Graeme, Colin; (NZ)
Agent: BALDWINS; PO Box 5999, Wellesley Street, Auckland (NZ)
Priority Data:
519863 28.06.2002 NZ
Title (EN) NOISE CANCELLATION SYSTEM AND HEADPHONE THEREFOR
(FR) SYSTEME SUPPRESSEUR DE BRUIT ET CASQUE PREVU A CET EFFET
Abstract: front page image
(EN)Headphones, typically for airline passenger use and fitted with noise cancellation microphones, have a filter network attached to each headset to render the response of each microphone at least much of the way towards a normalised impedance/response curve. In this way various manufactures of headphones may be used with an onboard noise cancellation system which is actually optimised for one manufacturers headphones. The filter may be a simple high pass filter and is preferably built in to the headphone.
(FR)L'invention concerne des casques, utilisés généralement par les passagers de compagnies aériennes, équipés de microphones suppresseurs de bruit, présentant un réseau de filtres fixé à chaque écouteur de façon à ce que la réponse de chaque microphone tende au moins fortement vers une courbe impédance/réponse normalisée. Il est ainsi possible d'utiliser différent modèles de casques avec un système suppresseur de bruit embarqué, réellement optimisé pour chaque modèle de casque.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, 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, HU, IE, IT, LU, MC, NL, 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)