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25 条记录 (耗时 0.014 秒)

    Speaker Controller, Signal Supplying Device, and Speaker System
    1.
    发明申请
    Speaker Controller, Signal Supplying Device, and Speaker System 审中-公开

    公开(公告)号：US20200351587A1

    公开(公告)日：2020-11-05

    申请号：US16932034

    申请日：2020-07-17

    申请人： Yamaha Corporation

    发明人： Masao NORO

    IPC分类号： H04R3/12 ,  H03F3/183 ,  H04R3/04 ,  H04R1/40 ,  H04R27/00 ,  G08B3/10

    摘要： A speaker controller includes a switch that is inserted on a speaker wiring for supplying a sound signal to a speaker. A switch control circuit can extract and hold an ON/OFF control signal for instructing ON/OFF of the switch from an alternating-current signal supplied via the speaker wiring. A switch control circuit controls ON/OFF of the switch based on the ON/OFF control signal. A power supply circuit can generate a power supply voltage for operating the switch control circuit from the alternating-current signal supplied via the speaker wiring.

    Electroacoustic Transducer
    2.
    发明申请
    Electroacoustic Transducer 审中-公开

    公开(公告)号：US20170085979A1

    公开(公告)日：2017-03-23

    申请号：US15310522

    申请日：2015-05-14

    申请人： Yamaha Corporation

    发明人： Masao NORO

    IPC分类号： H04R1/24 ,  H04R7/26 ,  H04R9/06 ,  H04R9/02 ,  H04R7/12 ,  H04R7/18

    CPC分类号： H04R1/24 ,  H04R1/26 ,  H04R1/265 ,  H04R7/12 ,  H04R7/127 ,  H04R7/18 ,  H04R7/20 ,  H04R7/26 ,  H04R9/025 ,  H04R9/04 ,  H04R9/06 ,  H04R31/003

    摘要： An electroacoustic transducer includes: a diaphragm including a cone portion having a conical shape such as a circular conical surface shape or an oval conical surface shape, and a wing-pair portion having a pair of longitudinal split tubular surfaces arranged next to each other, a valley being formed between a side portion of one of the longitudinal split tubular surfaces and a side portion of the other of the longitudinal split tubular surfaces; a converter that performs conversion between vibration of the diaphragm along an axis of the cone portion and an electric signal corresponding to the vibration; and a supporter that supports the diaphragm such that the diaphragm is movable in an axial direction of the cone portion. The small-diameter-side end portion of the cone portion, and a bottom portion of a valley of the wing-pair portion are secured to the converter.

    SIGNAL CONVERTER
    3.
    发明申请
    SIGNAL CONVERTER 有权

    公开(公告)号：US20220312107A1

    公开(公告)日：2022-09-29

    申请号：US17701129

    申请日：2022-03-22

    申请人： YAMAHA CORPORATION

    发明人： Masao NORO

    IPC分类号： H04R1/26 ,  H04R9/02 ,  H04R9/08 ,  H04R9/04 ,  H04R1/04 ,  H04R3/00 ,  H04R7/12

    摘要： A signal converter includes a chamber, a first diaphragm, a second diaphragm, and a first converter. The chamber has a first opening at one end and a second opening at a second end opposite the first end. The first diaphragm is disposed so as to cover the first opening. The second diaphragm is disposed so as to cover the second opening. The first converter is disposed in the chamber and configured to generate a first signal based on a vibration of the first diaphragm.

    Electroacoustic Transducer
    4.
    发明申请
    Electroacoustic Transducer 审中-公开

    公开(公告)号：US20170215007A1

    公开(公告)日：2017-07-27

    申请号：US15329596

    申请日：2015-07-27

    申请人： Yamaha Corporation

    发明人： Masao NORO

    IPC分类号： H04R7/12 ,  H04R7/16 ,  H04R9/06

    CPC分类号： H04R7/122 ,  H04R1/22 ,  H04R1/323 ,  H04R7/14 ,  H04R7/16 ,  H04R9/06 ,  H04R17/00 ,  H04R31/003 ,  H04R2231/001 ,  H04R2307/025

    摘要： An electroacoustic transducer includes: a diaphragm having two pairs of longitudinal split tubular surfaces; a converter that performs conversion between vibration of the diaphragm and an electric signal; and a supporter supporting the diaphragm. The two pairs of longitudinal split tubular surfaces form valleys and ridge portions. In each pair of the two pairs of longitudinal split tubular surfaces, one-side portions of the respective longitudinal split tubular surfaces form a valley. Another-side portion of the split tubular surface of each one of the two pairs and an other-side portion of the split tubular surface of the other of the two pairs form a ridge portion. The two pairs of longitudinal split tubular surfaces are arranged in at least one of a state in which the valleys are orthogonal to each other and a state in which the ridge portions are orthogonal to each other.

    Acoustic Apparatus
    6.
    发明申请
    Acoustic Apparatus 有权

    公开(公告)号：US20230017817A1

    公开(公告)日：2023-01-19

    申请号：US17945751

    申请日：2022-09-15

    申请人： Yamaha Corporation

    发明人： Yohei OHTANI ,  Masao NORO

    IPC分类号： H03F3/217 ,  H04R3/00 ,  H03F1/34

    摘要： An acoustic apparatus includes a class-D amplifier including a current feedback circuit, and a speaker system including a voice coil driven by the class-D amplifier. The speaker system is configured such that, in a case where the speaker system is driven by an ordinary amplifier having a first output resistance lower than a second output impedance of the class-D amplifier, a Q factor of the speaker system falls below a predetermined lower limit of an ordinary Q factor range of an ordinary speaker system. The current feedback circuit is configured to increase the second output impedance of the class-D amplifier by feeding a current flowing to the voice coil back to an input of the class-D amplifier so as to increase a Q factor as the acoustic apparatus higher than the predetermined lower limit of the ordinary Q factor range and within the ordinary Q factor range.

    HEADPHONE AND SPEAKER
    7.
    发明申请
    HEADPHONE AND SPEAKER 有权

    公开(公告)号：US20230007383A1

    公开(公告)日：2023-01-05

    申请号：US17939363

    申请日：2022-09-07

    申请人： YAMAHA CORPORATION

    发明人： Yuu TSUCHIHASHI ,  Yoshikazu HONJI ,  Masao NORO

    IPC分类号： H04R1/10 ,  H04R3/04

    摘要： A headphone includes: a housing; a first driver unit disposed in the housing; a partition wall dividing an internal space of the housing into a first space and a second space, the first space containing the first driver unit; a second driver unit attached to the partition wall; and an acoustic adjustment circuit configured to receive a first signal to be input to the first driver unit and generate a second signal to be input to the second driver unit based on the first signal.

    SIGNAL CONVERTER
    8.
    发明申请
    SIGNAL CONVERTER 有权

    公开(公告)号：US20220310296A1

    公开(公告)日：2022-09-29

    申请号：US17698277

    申请日：2022-03-18

    申请人： YAMAHA CORPORATION

    发明人： Masao NORO

    IPC分类号： H01F7/08 ,  H01F7/02 ,  H04R9/02 ,  H04R9/04 ,  H04R1/04 ,  H04R9/08 ,  H04R3/00 ,  H04R7/12

    摘要： A signal converter includes a magnetic circuit, a diaphragm, a first coil, a second coil, and a variable resistor. The magnetic circuit has a magnetic gap. The diaphragm is disposed over an opening of the magnetic circuit. The first coil is disposed in the magnetic gap and configured to output an electrical signal based on vibration of the diaphragm. The second coil is disposed in the magnetic gap and configured to brake the diaphragm. The variable resistor is connected to a first end and a second end of the second coil and configured to form a closed loop circuit together with the second coil.

    Speaker
    9.
    发明申请
    Speaker 有权

    公开(公告)号：US20210092511A1

    公开(公告)日：2021-03-25

    申请号：US17113954

    申请日：2020-12-07

    申请人： Yamaha Corporation

    发明人： Masao NORO

    IPC分类号： H04R1/28 ,  H04R1/02 ,  H04R3/04

    摘要： A speaker comprising includes an acoustic generation unit, a tube, and a pressure transmission member. The acoustic generation unit is arranged in a housing and includes a rear surface that faces an inside of the housing. The tube extends from the rear surface to an outside of the housing in a winding manner. The pressure transmission member is arranged at a side wall of the tube. The pressure transmission member is shared by portions of the tube at a plurality of positions that are located at different distances from the rear surface.