The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2013
Filed:
Aug. 12, 2010
William Berardi, Grafton, MA (US);
Michael Dublin, Cambridge, MA (US);
Eric S. Johanson, Millbury, MA (US);
Joseph Jankovsky, Cambridge, MA (US);
Hilmar Lehnert, Framingham, MA (US);
Michael W. Stark, Acton, MA (US);
Guy Torio, Ashland, MA (US);
William Berardi, Grafton, MA (US);
Michael Dublin, Cambridge, MA (US);
Eric S. Johanson, Millbury, MA (US);
Joseph Jankovsky, Cambridge, MA (US);
Hilmar Lehnert, Framingham, MA (US);
Michael W. Stark, Acton, MA (US);
Guy Torio, Ashland, MA (US);
Bose Corporation, Framingham, MA (US);
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.