Source: http://www.google.com/patents/US8199925?dq=inassignee:integral+inassignee:peripherals
Timestamp: 2015-03-05 11:13:29
Document Index: 302690649

Matched Legal Cases: ['application No. 2004', 'Application No. 2003', 'application No. 2004', 'application No. 2004', 'Application No. 2006800060275', 'application No. 05703397', 'Application No. 04808086']

Patent US8199925 - Loudspeaker array audio signal supply apparatus - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA first directivity parameter to provide a narrow directivity and a second directivity parameter to provide a wide directivity are preset for a directivity control apparatus to control the directivity of an array loudspeaker system. The directivity control apparatus selects either the first directivity...http://www.google.com/patents/US8199925?utm_source=gb-gplus-sharePatent US8199925 - Loudspeaker array audio signal supply apparatusAdvanced Patent SearchPublication numberUS8199925 B2Publication typeGrantApplication numberUS 10/585,269Publication dateJun 12, 2012Filing dateJan 4, 2005Priority dateJan 5, 2004Also published asCN1906972A, CN1906972B, DE602005018017D1, EP1705955A1, EP1705955A4, EP1705955B1, US20070165878, WO2005067348A1Publication number10585269, 585269, US 8199925 B2, US 8199925B2, US-B2-8199925, US8199925 B2, US8199925B2InventorsYusuke KonagaiOriginal AssigneeYamaha CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (103), Non-Patent Citations (30), Referenced by (1), Classifications (19), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetLoudspeaker array audio signal supply apparatus
US 8199925 B2Abstract
A first directivity parameter to provide a narrow directivity and a second directivity parameter to provide a wide directivity are preset for a directivity control apparatus to control the directivity of an array loudspeaker system. The directivity control apparatus selects either the first directivity parameter or the second directivity parameter in accordance with an instruction that is entered through an operating unit to select the directional characteristic of a loudspeaker array. Then, based on the selected directivity parameter, the directivity control apparatus generates delay control information, to be supplied to a delay circuit, and generates gain control information, to be supplied to a weighting unit.
The present invention relates to an audio signal supply apparatus that supplies an audio signal, such as a sound, to a loudspeaker array that is constituted by a plurality of loudspeaker units.
In recent years, large, thin televisions, such as plasma televisions and liquid crystal televisions, have rapidly spread to average homes. These large, thin televisions used to have problems resulting from small viewing angles. However, through various improvements, the problems with viewing angles have been largely eliminated, and when televisions are installed in a spacious room, we can view scenes from various locations. While much consideration has been given to improving pictures, as described above, sounds have not been much taken into account. For example, many loudspeakers employed for large, thin televisions are a combination of conventional loudspeakers, such as two-way loudspeakers, that have dipole type directional characteristics (see, for example, patent document 1).
The present invention is provided while taking into account the above described problems, and one objective of the present invention is to provide an array loudspeaker audio signal supply apparatus that can achieve wide directivity and can also achieve efficient directivity that permits an audience to clearly hear sounds at a low volume.
FIG. 1 is a diagram for explaining directivity control of a delay array type according to the first basic theory;
Before the individual modes according to the present invention are described, the basic theory of the present invention will first be explained.
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Cited in related U.S. Patent 7,920,710.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8879741Mar 11, 2010Nov 4, 2014Yamaha CorporationSpeaker array apparatus and sound beam control methodClassifications U.S. Classification381/77, 381/97, 381/89, 381/80, 381/116International ClassificationH04S7/00, H04R5/04, H04R1/40, H04R3/00, H04S1/00, H04B3/00, H04R1/02Cooperative ClassificationH04R5/04, H04R2205/022, H04R2430/20, H04R2205/041, H04R1/403European ClassificationH04R1/40B, H04R5/04Legal EventsDateCodeEventDescriptionSep 22, 2006ASAssignmentOwner name: YAMAHA CORPORATION, JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KONAGAI, YUSUKE;REEL/FRAME:018292/0610Effective date: 20060728RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services