公开(公告)号：US20210136486A1

公开(公告)日：2021-05-06

申请号：US17146682

申请日：2021-01-12

申请人： YAMAHA CORPORATION

发明人： Yu TSUCHIHASHI ,  Satoshi GOUGI ,  Atsushi HATTORI ,  Kazuhiko NISHIZAWA ,  Akira MIKI

IPC分类号： H04R1/28 ,  H04R1/02

摘要： A supporter for use in an electroacoustic transducer device including a housing and an electroacoustic transducer mounted to the housing using the supporter, the supporter including: a truncated conical shaped body including: a first portion configured to be held in contact with the electroacoustic transducer at a first position; and a second portion configured to be held in contact with the housing at a second position, wherein the second position is disposed spaced from the first position along an axial direction of an axis of the truncated conical shaped body.

公开(公告)号：US20210289288A1

公开(公告)日：2021-09-16

申请号：US17333881

申请日：2021-05-28

申请人： Yamaha Corporation

发明人： Yu TSUCHIHASHI ,  Tomoya MIYATA

IPC分类号： H04R1/28

摘要： An electroacoustic transducer includes a housing, one or more partition walls, a diaphragm, and a tube. The one or more partition walls divide an inner space of the housing into a plurality of spaces, such that a volume of a first of the plurality of spaces is different from a volume of a second of the plurality of spaces except the first of the plurality of spaces. The diaphragm is disposed in the housing, such that one surface thereof faces the plurality of spaces. The tube establishes communication between a sound wave emission opening that is open to an outer space of the housing and each of the plurality of spaces.

公开(公告)号：US20200245074A1

公开(公告)日：2020-07-30

申请号：US16851967

申请日：2020-04-17

申请人： Yamaha Corporation

发明人： Yu TSUCHIHASHI ,  Tomoya MIYATA

IPC分类号： H04R17/00 ,  H04R1/10

摘要： A transducer includes a hollow housing, and a piezoelectric sheet which is disposed on a first portion of an inner wall of the housing, and a block which is disposed on a second portion of the inner wall of the housing.

公开(公告)号：US20200154213A1

公开(公告)日：2020-05-14

申请号：US16739833

申请日：2020-01-10

申请人： Yamaha Corporation

发明人： Tomoya MIYATA ,  Akira MIKI ,  Yu TSUCHIHASHI

IPC分类号： H04R17/00 ,  H01L41/053 ,  H01L41/047

摘要： A transducer includes a housing, and a piezoelectric element that is disposed inside the housing and that has a porous film. The piezoelectric element is bent or curved.

公开(公告)号：US20210329357A1

公开(公告)日：2021-10-21

申请号：US17200036

申请日：2021-03-12

申请人： YAMAHA CORPORATION

发明人： Yu TSUCHIHASHI ,  Akira MIKI

IPC分类号： H04R1/02

摘要： A speaker housing includes: a front wall to which a speaker unit is to be attached; at least one first wall; at least one second wall; and a plurality of ribs attached to the first wall, wherein an internal space is formed by the front wall, the first wall, and the second wall, a plurality of meshes that segment the first wall are defined, and shapes of the ribs are determined based on directions of a maximum principal stress generated in the meshes due to vibrations when the vibrations occur in a state where the ribs are not provided in the first wall.

公开(公告)号：US20210289287A1

公开(公告)日：2021-09-16

申请号：US17333741

申请日：2021-05-28

申请人： Yamaha Corporation

发明人： Yu TSUCHIHASHI ,  Tomoya MIYATA

IPC分类号： H04R1/28

摘要： A electroacoustic transducer includes a housing, a piezoelectric element, a partition wall, a first tube, and a second tube. The piezoelectric element is disposed in the housing and includes a porous film and a pair of electrodes that sandwich the porous film therebetween. The partition wall divides an inner space of the housing into a first space closer to one of the pair of electrodes, and a second space closer to another of the pair of electrodes. The first tube establishes communication between a sound wave emission opening that is open to an outer space of the housing and the first space. The second tube establishes communication between the sound wave emission opening and the second space.

公开(公告)号：US20210266656A1

公开(公告)日：2021-08-26

申请号：US17168482

申请日：2021-02-05

申请人： Yamaha Corporation

发明人： Yu TSUCHIHASHI

IPC分类号： H04R1/10 ,  H04R1/28 ,  G10K11/172

摘要： A headphone includes an electro-acoustic transducer, a housing, a noise cancelling circuit, a resonant frequency converter, and a switch. The electro-acoustic transducer is configured to reproduce sound from electrical signals. The housing is attached to the electro-acoustic transducer. The noise cancelling circuit is configured to attenuate a noise sound by adding an antiphase sound to the noise sound. The resonant frequency converter is configured to change a resonant frequency of a Helmholtz resonator configured to include a cavity in the housing and a tubular cavity communicating with the cavity. The switch is configured to perform alteration of the resonant frequency and switching of the noise cancelling circuit, in conjunction with each other.