Directional loudspeaker box with directional acoustic transmission holes
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United States of America Patent
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May 8, 2018
Issued Date -
N/A
app pub date -
Mar 15, 2017
filing date -
Mar 15, 2017
priority date (Note) -
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Abstract
A directional loudspeaker box with directional acoustic transmission holes includes a hollow housing and a loudspeaker. The hollow housing is provided with a front opening at the front end and has a peripheral portion adjacent to the front opening and formed with a plurality of directional acoustic transmission holes. The loudspeaker is fixed in the hollow housing and generates sound that can propagate out of the hollow housing through the front opening and the directional acoustic transmission holes. The angle at which each directional acoustic transmission hole is formed with respect to the central axis of the loudspeaker is a function of the axial distance between the directional acoustic transmission hole and the loudspeaker, wherein the smaller the axial distance, the larger the angle, and the larger the axial distance, the smaller the angle. Thus, the directional loudspeaker box effectively deals with near- and far-field sound effects.
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