Invention Grant
- Patent Title: Active and passive directional acoustic radiating
- Patent Title (中): 主动和被动定向声辐射
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Application No.: US12855000Application Date: 2010-08-12
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Publication No.: US08553894B2Publication Date: 2013-10-08
- Inventor: William Berardi , Michael Dublin , Eric S. Johanson , Joseph Jankovsky , Hilmar Lehnert , Michael W. Stark , Guy Torio
- Applicant: William Berardi , Michael Dublin , Eric S. Johanson , Joseph Jankovsky , Hilmar Lehnert , Michael W. Stark , Guy Torio
- Applicant Address: US MA Framingham
- Assignee: Bose Corporation
- Current Assignee: Bose Corporation
- Current Assignee Address: US MA Framingham
- Main IPC: H04R5/00
- IPC: H04R5/00 ; H04R3/00

Abstract:
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.
Public/Granted literature
- US20120039475A1 Active and Passive Directional Acoustic Radiating Public/Granted day:2012-02-16
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