发明名称 |
Constant-beamwidth loudspeaker array |
摘要 |
A loudspeaker is provided for receiving an incoming electrical signal and transmitting an acoustical signal that is directional and has a substantially constant beamwidth over a wide frequency range. The loudspeaker may include a curved mounting plate that has curvature over a range of angles. The loudspeaker may include an array of speaker drivers coupled to the mounting plate. Each speaker driver may be driven by an electrical signal having a respective amplitude that is a function of the speaker driver's respective location on the mounting plate. The function may be a Legendre function. Alternatively, the loudspeaker may include a flat mounting plate. In this case, the respective electrical signal driving each speaker may have a phase delay that virtually positions the speaker onto a curved surface. |
申请公布号 |
US8170223(B2) |
申请公布日期 |
2012.05.01 |
申请号 |
US20100651890 |
申请日期 |
2010.01.04 |
申请人 |
KEELE, JR. D. BROADUS;HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED |
发明人 |
KEELE, JR. D. BROADUS |
分类号 |
H04R29/00;H04B3/00;H04B5/00;H04R1/40;H04R3/12;H04R5/00;H04R9/06 |
主分类号 |
H04R29/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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