发明名称 |
Flat panel loudspeakers |
摘要 |
A flat panel loudspeaker with such an emission characteristic is obtained which, in the event of the flat panel loudspeaker being set up inversely, provides an improved listening result in that a loudspeaker is provided within the housing, and a sound conduction is configured such that sound from the loudspeaker is conducted outward via an acoustic aperture within the housing for undirected emission. |
申请公布号 |
US8798302(B2) |
申请公布日期 |
2014.08.05 |
申请号 |
US201012959183 |
申请日期 |
2010.12.02 |
申请人 |
Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V. |
发明人 |
Ehrig Lutz;Beer Daniel |
分类号 |
H04R1/20;H04R1/34;H04R1/28 |
主分类号 |
H04R1/20 |
代理机构 |
Perkins Coie LLP |
代理人 |
Glenn Michael A.;Perkins Coie LLP |
主权项 |
1. A flat panel loudspeaker comprising
a housing comprising a front side and a rear side; a high-frequency loudspeaker within the housing; and a mid- or low-frequency loudspeaker arranged so as to emit outwardly away from the rear side of the housing; and a sound conduction configured to conduct sound from the high-frequency loudspeaker via an acoustic aperture within the housing outwards, wherein the acoustic aperture is formed in a lateral side of the housing extending between, and connecting, the front side and the rear side, in form of a series of holes or in form of a slit in the lateral side, wherein a longitudinal extension of the series of holes or the slit extends circumferentially with respect to the front and rear sides and a width of the series of holes or the slit in a thickness direction via which front and rear sides are distanced from each other is smaller than a wavelength of a highest frequency of the sound from the high-frequency loudspeaker so that the sound emitted by the high-frequency loudspeaker is radiated from the acoustic aperture in a plane perpendicular to the longitudinal direction in a nearly equiangular manner so that a perceivable portion of the sound emitted by the high-frequency loudspeaker propagates into a direction into which the front side of the housing faces. |
地址 |
Munich DE |