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    Speaker
    1.
    发明公开
    Speaker 审中-公开

    公开(公告)号：US20240244378A1

    公开(公告)日：2024-07-18

    申请号：US18313349

    申请日：2023-05-07

    Applicant: AAC Microtech (Changzhou) Co., Ltd.

    Inventor： Bo Xiao ,  Ronglin Linghu

    IPC: H04R9/06 ,  H04R3/00 ,  H04R7/06 ,  H04R7/18 ,  H04R9/02

    CPC classification number: H04R9/06 ,  H04R3/00 ,  H04R7/06 ,  H04R7/18 ,  H04R9/025 ,  H04R2307/023 ,  H04R2400/11

    Abstract: Disclosed is a speaker which improves acoustic performances and includes a frame, a vibration system, a magnetic circuit system, a front cover, a sealing diaphragm, and a sound outlet. The vibration system includes an upper diaphragm, a lower diaphragm in an annular shape, a skeleton including an annular enclosure wall, and a voice coil. The magnetic circuit system includes a bottom plate, a first magnetic unit, and a second magnetic unit. The upper diaphragm includes an inner suspension fixed to the first magnetic unit, an outer suspension fixed to the frame, and a dome. The upper diaphragm and the front cover form a first front cavity. The annular enclosure wall, the sealing diaphragm, the lower diaphragm and the frame form a second front cavity. Both the first front cavity and the second front cavity communicate with the sound outlet.

    Audio transducers
    2.
    发明授权
    Audio transducers 有权

    公开(公告)号：US11968510B2

    公开(公告)日：2024-04-23

    申请号：US18316762

    申请日：2023-05-12

    Applicant: WING ACOUSTICS LIMITED

    Inventor： David John Palmer ,  Michael Ian Palmer

    IPC: H04R7/24 ,  H04R1/10 ,  H04R9/02 ,  H04R9/06 ,  H04R15/00 ,  H04R17/00 ,  H04R19/01 ,  H04R31/00

    CPC classification number: H04R7/24 ,  H04R9/025 ,  H04R9/06 ,  H04R31/003 ,  H04R1/1008 ,  H04R1/1075 ,  H04R15/00 ,  H04R17/00 ,  H04R19/013 ,  H04R2307/023 ,  H04R2307/027

    Abstract: The invention relates to audio transducers, such as loudspeaker, microphones and the like, and includes improvements in or relating to: audio transducer diaphragm structures and assemblies, audio transducer mounting systems; audio transducer diaphragm suspension systems, personal audio devices incorporating the same and any combination thereof. The embodiments of the invention include linear action and rotational action transducers. For both types of transducer, rigid and composite diaphragm constructions and unsupported diaphragm periphery designs are described. Systems and methods for mounting the transducer to a housing, such as an enclosure or baffle are also described. Furthermore, hinge systems including: rigid contact hinge systems and flexible hinge systems are also disclosed for various rotational action transducer embodiments. Various applications and implementations are described and envisaged for the audio transducer embodiments including, for example, personal audio devices such as headphones, earphones and the like.

    AN ACOUSTIC APPARATUS AND ASSOCIATED METHODS
    3.
    发明申请
    AN ACOUSTIC APPARATUS AND ASSOCIATED METHODS 审中-公开

    公开(公告)号：US20190058955A1

    公开(公告)日：2019-02-21

    申请号：US15771229

    申请日：2016-10-07

    Applicant: Nokia Technologies Oy

    Inventor： Martti VOUTILAINEN ,  Oleksandr KONONENKO

    IPC: H04R17/00 ,  H04R7/06

    CPC classification number: H04R17/00 ,  H04R7/02 ,  H04R7/06 ,  H04R2307/023 ,  H04R2400/01

    Abstract: An apparatus comprising a piezoelectric diaphragm positioned between opposing first and second electrodes, the piezoelectric diaphragm comprising a stack of graphene oxide layers between respective electrode-engaging layers of reduced graphene oxide, wherein the apparatus is configured to have one or more of a sound output mode and a sound input mode such that: in the sound output mode, the first and second electrodes are configured to apply a voltage to the reduced graphene oxide layers to generate an electric field across the graphene oxide stack, the generated electric field causing vibration of the piezoelectric diaphragm to produce a sound output wave corresponding to the applied voltage, and in the sound input mode, the reduced graphene oxide layers are configured to collect electrical charge which is induced in the graphene oxide layers by vibration of the piezoelectric diaphragm in response to a sound input wave, the collected electrical charge creating a voltage between the first and second electrodes corresponding to the sound input wave.

    HOMOGENEOUS HARD SPEAKER RADIATING DIAPHRAGMS WITH DAMPING
    8.
    发明申请
    HOMOGENEOUS HARD SPEAKER RADIATING DIAPHRAGMS WITH DAMPING 审中-公开

    公开(公告)号：US20180130458A1

    公开(公告)日：2018-05-10

    申请号：US15673554

    申请日：2017-08-10

    Applicant: BDNC (HOLDING) LIMITED

    Inventor： WALTER KA WAI CHU

    IPC: G10K13/00 ,  H04R31/00

    CPC classification number: G10K13/00 ,  C03C21/001 ,  H04R7/08 ,  H04R7/10 ,  H04R7/18 ,  H04R9/06 ,  H04R31/003 ,  H04R2307/023

    Abstract: A compressed skins-tensioned core structure includes a first surface region; a second surface region; a core between the first surface region and the second surface region; a first transition region continuous with the first surface region at a side, and continuous with the core at another side; and a second transition region continuous with the core at a side, and continuous with the second surface region at another side, wherein each of the first surface region, the second surface region, the core, the first transition region and the second transition region is formed of a substantially homogeneous amorphous material; each of the first surface region and the second surface region exhibits an internal compressive stress, the core exhibits an internal tensile stress, and each of the first transition region and the second transition region exhibits a stress gradient from the internal compressive stress to the internal tensile stress.

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