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Patent Agency Ranking
公开(公告)号：US20220248114A1
公开(公告)日：2022-08-04
申请号：US17728329
申请日：2022-04-25
Inventor： Akihisa KAWAMURA , Shuji SAIKI , Satoshi TAKAYAMA
IPC: H04R1/02
Abstract: A building material facing a first space includes a structure which is in a plate form and includes at least one opening; a first loudspeaker disposed in a second space across the structure from the first space, in a position opposite to a corresponding one of the at least one opening; and a three-dimensional netlike structure disposed between the structure and the first loudspeaker and configured with a fibrous member three-dimensionally intertwined.
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公开(公告)号：US20250071456A1
公开(公告)日：2025-02-27
申请号：US18938609
申请日：2024-11-06
Inventor： Minami NAKA , Shuji SAIKI , Akihisa KAWAMURA , Satoshi TAKAYAMA
IPC: H04R1/02
Abstract: A loudspeaker device includes: a loudspeaker unit; and a casing that defines an internal space in which the loudspeaker unit is housed. The casing includes a baffle board to which the loudspeaker unit is fixed in an orientation that exposes a diaphragm of the loudspeaker unit. The baffle board includes one or more through-holes that establish communication between an external space outside of the casing and the internal space. Sound that is emitted from the one or more through-holes has a wavelength with an inverted phase relative to sound emitted directly from the diaphragm to the external space.
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公开(公告)号：US20250056155A1
公开(公告)日：2025-02-13
申请号：US18930071
申请日：2024-10-29
Inventor： Kota NAKAHASHI , Shuji SAIKI , Akihisa KAWAMURA , Satoshi TAKAYAMA
IPC: H04R1/34
Abstract: An acoustic lens includes: a plurality of first partition plates aligned apart from each other in the traveling direction of sound waves to be emitted from a loudspeaker. Each of the plurality of first partition plates includes holes through which the sound waves pass. The lengths of the plurality of first partition plates in a first direction are mutually different.
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公开(公告)号：US20230199390A1
公开(公告)日：2023-06-22
申请号：US17924890
申请日：2021-04-28
Inventor： Nobuhiko WASHIO , Akihisa KAWAMURA , Atsushi SAKAGUCHI , Isao KAKUHARI
IPC: H04R3/12 , H04R1/40 , G10K11/178
CPC classification number: H04R3/12 , G10K11/17857 , H04R1/403 , H04R2430/20
Abstract: A loudspeaker device includes: a first loudspeaker that outputs a sound; a second loudspeaker that is adjacent to the first loudspeaker in a predetermined direction and outputs a sound in a direction intersecting with a direction in which the first loudspeaker outputs the sound; and a phase switching circuit that switches between a first switching state and a second switching state, the first switching state being a state in which an input sound signal is inputted to both the first loudspeaker and the second loudspeaker, the second switching state being a state in which the input sound signal is inputted to one of the first loudspeaker and the second loudspeaker while an inverted sound signal obtained by inverting a phase of the input sound signal is inputted to the other of the first loudspeaker and the second loudspeaker.
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公开(公告)号：US20250063297A1
公开(公告)日：2025-02-20
申请号：US18934815
申请日：2024-11-01
Inventor： Kota NAKAHASHI , Shuji SAIKI , Akihisa KAWAMURA , Satoshi TAKAYAMA
Abstract: An acoustic lens includes an opening and a plurality of partition plates. A sound wave to be emitted from a loudspeaker is input to the opening. The plurality of partition plates form a plurality of sound paths through which the sound wave input to the opening passes. The plurality of partition plates include a first control mechanism and a second control mechanism. The first control mechanism controls directivity, in a first direction, of the sound wave that has passed through the plurality of sound paths and is output to outside. The second control mechanism controls directivity, in a second direction intersecting the first direction, of the sound wave that has passed through the plurality of sound paths and is output to outside.
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