公开(公告)号：US20220360875A1

公开(公告)日：2022-11-10

申请号：US17739975

申请日：2022-05-09

申请人： Yamaha Corporation

发明人： Yasuaki TAKANO ,  Hiroyuki AYAME ,  Tomoaki MORI ,  Katsuya UCHIDA

IPC分类号： H04R1/08 ,  H04R1/10 ,  H04R1/02

摘要： An earphone includes a housing and a microphone. The microphone is provided in the housing. The housing includes a hole that leads to the microphone. The hole has a shape in which a cross-sectional area expands, toward a back of a head of a user wearing the earphone, from the microphone toward an outside of the housing. The housing, in a case of being worn by the user, is located farther away from an external earhole, in an outside direction from a side of the head, than from an ear of the user.

公开(公告)号：US20220141563A1

公开(公告)日：2022-05-05

申请号：US17577727

申请日：2022-01-18

申请人： Yamaha Corporation

发明人： Katsuya UCHIDA ,  Akira MIKI

IPC分类号： H04R1/02 ,  H04R1/28

摘要： An acoustic device includes a speaker unit, a support body, and a vibration damping member. The support body has lower mobility than a member on which the speaker unit is mounted. The vibration damping member is provided between the speaker unit and the support body or between the member on which the speaker unit is mounted and the support body.

公开(公告)号：US20240290302A1

公开(公告)日：2024-08-29

申请号：US18655618

申请日：2024-05-06

申请人： YAMAHA CORPORATION

发明人： Katsuya UCHIDA ,  Tetsuro SHOJI

IPC分类号： G10D9/035 ,  G10D9/08

CPC分类号： G10D9/035 ,  G10D9/08

摘要： In an embodiment, the reed 10 includes a base part 150 and a vamp 153. The base part 150 has a planar portion 151 and a heel 157 at a first end of the base part 150. The vamp 153 extends from a second end of the base part 150, opposite the heel 157. The vamp 153 includes a sloping shape ending in a tip 100 which is inclined relative to the planar portion 151 when the vamp 153 is viewed from the planar portion 151.

公开(公告)号：US20190297413A1

公开(公告)日：2019-09-26

申请号：US16234700

申请日：2018-12-28

申请人： Yamaha Corporation

发明人： Katsuya UCHIDA ,  Akira MIKI ,  Hirofumi ONITSUKA

IPC分类号： H04R1/28 ,  H04R1/02

摘要： A bass reflex port including: a tubular body portion; and a surface forming portion which is board-like, and continuous to an inner wall of the tubular body portion and which has a surface extending radially outwardly from an opening end of the tubular body portion disposed in a housing of a speaker, wherein the surface forming portion extends linearly in a direction away from a tube axis of the tubular body portion in a cross section parallel to the tube axis.

公开(公告)号：US20190141437A1

公开(公告)日：2019-05-09

申请号：US16238032

申请日：2019-01-02

申请人： YAMAHA CORPORATION

发明人： Akira MIKI ,  Hirofumi ONITSUKA ,  Katsuya UCHIDA

IPC分类号： H04R1/28 ,  H04R1/02

摘要： An acoustic device includes an enclosure and a bass reflex port that includes a tube body. An inner wall surface of the tube body includes multiple regions in which viscous resistances in a tube axis direction of moving air and the inner wall surface are different. The multiple regions are provided along a circumferential direction of the inner wall surface. The tube body is attached to an opening area in the enclosure.