Directional sound device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11551661
APP PUB NO 20210049995A1
SERIAL NO

16978879

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Abstract

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A directional sound apparatus includes a planar shape plate and a sound wave generator. The planar shape plate has a plurality of grooves formed on a surface of the planar shape plate. The sound wave generator is configured to radiate a sound wave to outside from the surface of the planar shape plate. A width of each of the grooves and a distance between the grooves adjacent to each other are smaller than a wavelength of the sound wave. The planar shape plate has a plurality of cell areas in which at least one groove is included. A structure of the groove included in a first cell area is different from that of the groove included in a second cell area adjacent to the first cell area, so that surface admittance in the first cell area is different from that in the second cell area.

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Patent Owner(s)

Patent OwnerAddress
KOREA INSTITUTE OF MACHINERY & MATERIALS156 GAJEONGBUK-RO YUSEONG-GU DAEJEON 34103 34103
CENTER FOR ADVANCED META-MATERIALS1DONG 412 413 414 415HO 156 GAJEONGBUK-RO YUSEONG-GU DAEJEON 34103

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hur, Shin Sejong, KR 12 53
Lee, Duck Gyu Daejeon, KR 3 2
Lee, Eun Joong Daejeon, KR 2 2
Song, Kyungjun Daejeon, KR 7 21

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