EP 1866908 A2 20071219 - ACTIVE COUNTERSOUND SYSTEM WITH SPECIAL ARRANGEMENT OF THE SECONDARY ACTUATORS FOR REDUCING THE PASSAGE OF SOUND AT AN OPEN BOUNDARY AREA OF TWO VOLUMES
Title (en)
ACTIVE COUNTERSOUND SYSTEM WITH SPECIAL ARRANGEMENT OF THE SECONDARY ACTUATORS FOR REDUCING THE PASSAGE OF SOUND AT AN OPEN BOUNDARY AREA OF TWO VOLUMES
Title (de)
AKTIVES GEGENSCHALLSYSTEM MIT SPEZIELLER ANORDNUNG DER SEKUNDÄREN AKTOREN ZUM REDUZIEREN DES SCHALLDURCHGANGS AN EINEM OFFENEN GRENZBEREICH ZWEIER VOLUMEN
Title (fr)
SYSTEME ACTIF DE REDUCTION SONORE A DISPOSITION SPECIALE D'ACTIONNEURS PERMETTANT DE REDUIRE LE PASSAGE DU SON A UNE ZONE LIMITE OUVERTE DE DEUX VOLUMES
Publication
Application
Priority
- EP 2006003092 W 20060405
- DE 102005016021 A 20050407
- US 66906105 P 20050407
Abstract (en)
[origin: DE102005016021A1] A reference sensor (13) detects a primary sound wave (16) and outputs a reference signal (R). An automatic controller (11) generates an error signal (F) based on the reference signal and a secondary signal (S) produced by secondary actuators (14). Counter sound waves (15) from the secondary actuators are reduced based on the error signal to obtain an optimal sound wave. The secondary actuators are arranged so as to be penetrable by the primary sound wave at the edge of an open depressing surface (21).
IPC 8 full level
G10K 11/178 (2006.01)
CPC (source: EP US)
G10K 11/17857 (2017.12 - EP US); G10K 11/17881 (2017.12 - EP US); G10K 2210/12 (2013.01 - EP US)
Citation (search report)
See references of WO 2006105948A2
Designated contracting state (EPC)
DE FR GB IT SE
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
DE 102005016021 A1 20061012; CA 2597636 A1 20061012; CN 101147189 A 20080319; EP 1866908 A2 20071219; JP 2008537166 A 20080911; RU 2007139146 A 20090520; RU 2411592 C2 20110210; US 2008196967 A1 20080821; WO 2006105948 A2 20061012; WO 2006105948 A3 20070524; WO 2006105948 B1 20070719
DOCDB simple family (application)
DE 102005016021 A 20050407; CA 2597636 A 20060405; CN 200680009803 A 20060405; EP 06724041 A 20060405; EP 2006003092 W 20060405; JP 2008504679 A 20060405; RU 2007139146 A 20060405; US 90838306 A 20060405