EP 2604045 B1 20150708 - Active and passive directional acoustic radiating
Title (en)
Active and passive directional acoustic radiating
Title (de)
Aktive und passive akustische Richtstrahlung
Title (fr)
Rayonnement acoustique directionnel actif et passif
Publication
Application
Priority
- US 85498210 A 20100812
- US 85500010 A 20100812
- US 2011047429 W 20110811
Abstract (en)
[origin: WO2012021713A1] An three-way audio system that uses directional arrays for radiating mid frequency acoustic energy and passive directional devices to radiate the high frequencies. The system includes a left channel, a right channel, and a center channel. A crossover network separates the left channel and the right channel into low frequency content, midrange frequency content, and high frequency content. An omnidirectional acoustical device radiates acoustic energy corresponding to the low frequency content of the combined left channel, right channel and center channel. A first directional array, comprising signal processing circuitry and more than one acoustic driver, radiates acoustic energy corresponding to the midrange content of one of the left channel and right channel signal so that more acoustic energy corresponding to the midrange content of one of the left channel signal and the right channel signal is radiated laterally than in other directions. A first passive directional device, radiates acoustic energy corresponding to the high frequency content of the one of the left channel and right channel signal so that more acoustic energy corresponding to the high frequency content of the one of the left channel signal and the right channel signal is radiated laterally than in other directions.
IPC 8 full level
H04R 3/12 (2006.01); H04R 1/26 (2006.01); H04R 1/28 (2006.01); H04R 3/14 (2006.01); H04S 3/00 (2006.01)
CPC (source: EP)
H04R 3/12 (2013.01); H04R 3/14 (2013.01); H04R 1/26 (2013.01); H04R 1/2811 (2013.01); H04R 1/2834 (2013.01); H04R 1/2857 (2013.01); H04R 1/2876 (2013.01); H04R 2430/03 (2013.01); H04R 2499/15 (2013.01); H04S 3/002 (2013.01)
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)
WO 2012021713 A1 20120216; CN 103109545 A 20130515; CN 103109545 B 20150819; EP 2604045 A1 20130619; EP 2604045 B1 20150708; JP 2013538509 A 20131010; JP 5592566 B2 20140917
DOCDB simple family (application)
US 2011047429 W 20110811; CN 201180044946 A 20110811; EP 11757441 A 20110811; JP 2013524231 A 20110811