EP 2378513 B1 20120620 - Method and system for active noise reduction
Title (en)
Method and system for active noise reduction
Title (de)
Verfahren und System zur aktiven Lärmreduktion
Title (fr)
Procédé et système de réduction de bruit active
Publication
Application
Priority
DE 102010014226 A 20100408
Abstract (en)
[origin: EP2378513A1] The method involves measuring a physical parameter with a reference sensor (2) dependent on time for the primary sound source (1), which characterizes the sound-generating motion of the emitting surface of the primary sound source. The corresponding time-dependent reference parameters (q-pq-t) are obtained, which comprise the phase information of the primary sound source. The secondary sound source (6) is controlled with a time-dependent driving signal. An independent claim is also included for an active noise reduction system for active noise reduction of a sound field generated by a swinging emitting surface of a primary sound source.
IPC 8 full level
G10K 11/178 (2006.01)
CPC (source: EP US)
G10K 11/17823 (2017.12 - EP US); G10K 11/17833 (2017.12 - EP US); G10K 11/17857 (2017.12 - EP US); G10K 11/17881 (2017.12 - 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 2378513 A1 20111019; EP 2378513 B1 20120620; DE 102010014226 A1 20111124; DK 2378513 T3 20120924
DOCDB simple family (application)
EP 11161701 A 20110408; DE 102010014226 A 20100408; DK 11161701 T 20110408