EP 2597889 B1 20140604 - HEADPHONES WITH NON-ADAPTIVE ACTIVE NOISE CONTROL
Title (en)
HEADPHONES WITH NON-ADAPTIVE ACTIVE NOISE CONTROL
Title (de)
KOPFHÖRER MIT NICHT-ADAPTIVES AKTIVEN GERÄUSCHKONTROLLE
Title (fr)
CASQUE AUDIO A CONTROLE ACTIF DE BRUIT DE TYPE NON-ADAPTATIF
Publication
Application
Priority
FR 1160642 A 20111122
Abstract (en)
[origin: EP2597889A1] The headset has a mixer circuit i.e. summing circuit (46), receiving inputs signals delivered by a feed forward filter (32), a feedback filter (42) and a stabilizer filter (44). The stabilizer filter is connected with a feedback branch for receiving input signal delivered by an internal microphone (36), and delivering output signal as an input to a combining circuit. The mixing circuit delivers a linear combination of the output signals delivered by the three filters together with a fraction of to-be played back audio signal (S) with respective weighting of gains applied to the signals.
IPC 8 full level
H04R 1/10 (2006.01); H04R 5/033 (2006.01)
CPC (source: EP US)
H04R 1/1083 (2013.01 - EP US); H04R 1/1008 (2013.01 - EP US); H04R 5/033 (2013.01 - EP US); H04R 2201/107 (2013.01 - EP US); H04R 2420/07 (2013.01 - EP US); H04R 2460/01 (2013.01 - EP US); H04R 2460/05 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2597889 A1 20130529; EP 2597889 B1 20140604; CN 103139677 A 20130605; FR 2983026 A1 20130524; JP 2013110746 A 20130606; US 2013129105 A1 20130523; US 8948409 B2 20150203
DOCDB simple family (application)
EP 12193852 A 20121122; CN 201210475894 A 20121121; FR 1160642 A 20111122; JP 2012256043 A 20121122; US 201213655819 A 20121019