Vented liquid-resistant microphone assembly

    公开(公告)号:US11882394B2

    公开(公告)日:2024-01-23

    申请号:US17670347

    申请日:2022-02-11

    Applicant: Apple Inc.

    CPC classification number: H04R1/08 H04R1/04

    Abstract: Aspects of the subject technology relate to liquid-resistant microphone modules for electronic devices. A microphone module may include a non-porous membrane that seals the front volume of the microphone module from the external environment of the electronic device. The microphone module may also include a substrate having an opening that allows airflow between the front volume and an interior cavity within the housing of the electronic device. In various implementations, an inductive vent and/or a resistive vent may be provided over the opening in the substrate.

    Vented acoustic transducers, and related methods and systems

    公开(公告)号:US11317199B2

    公开(公告)日:2022-04-26

    申请号:US16880812

    申请日:2020-05-21

    Applicant: Apple Inc.

    Abstract: An electronic device has an acoustic transducer with an acoustic diaphragm. The diaphragm has opposed first and second major surfaces. A front volume is positioned adjacent the first major surface. A back volume is positioned adjacent the second major surface. An elongated channel defines a barometric vent and extends from a first end fluidly coupled with the front volume to a second end fluidly coupled with the back volume, fluidly coupling the front volume with the back volume. The elongated channel may have a high aspect ratio (L/D), providing the vent with a substantial air mass. The elongated channel may be segmented to define a higher-order filter. For example, a segmented channel can have a cascade of repeating acoustic-mass and acoustic-compliance units, providing the barometric vent with additional degrees-of-freedom for tuning.

    VENTED ACOUSTIC TRANSDUCERS, AND RELATED METHODS AND SYSTEMS

    公开(公告)号:US20200382862A1

    公开(公告)日:2020-12-03

    申请号:US16880812

    申请日:2020-05-21

    Applicant: Apple Inc.

    Abstract: An electronic device has an acoustic transducer with an acoustic diaphragm. The diaphragm has opposed first and second major surfaces. A front volume is positioned adjacent the first major surface. A back volume is positioned adjacent the second major surface. An elongated channel defines a barometric vent and extends from a first end fluidly coupled with the front volume to a second end fluidly coupled with the back volume, fluidly coupling the front volume with the back volume. The elongated channel may have a high aspect ratio (L/D), providing the vent with a substantial air mass. The elongated channel may be segmented to define a higher-order filter. For example, a segmented channel can have a cascade of repeating acoustic-mass and acoustic-compliance units, providing the barometric vent with additional degrees-of-freedom for tuning.

    VENTED ACOUSTIC TRANSDUCERS, AND RELATED METHODS AND SYSTEMS

    公开(公告)号:US20200382861A1

    公开(公告)日:2020-12-03

    申请号:US16880825

    申请日:2020-05-21

    Applicant: Apple Inc.

    Abstract: An electronic device has an acoustic transducer with an acoustic diaphragm. The diaphragm has opposed first and second major surfaces. A front volume is positioned adjacent the first major surface. A back volume is positioned adjacent the second major surface. An elongated channel defines a barometric vent and extends from a first end fluidly coupled with the front volume to a second end fluidly coupled with the back volume, fluidly coupling the front volume with the back volume. The elongated channel may have a high aspect ratio (L/D), providing the vent with a substantial air mass. The elongated channel may be segmented to define a higher-order filter. For example, a segmented channel can have a cascade of repeating acoustic-mass and acoustic-compliance units, providing the barometric vent with additional degrees-of-freedom for tuning.

    MEMS speaker
    20.
    发明授权

    公开(公告)号:US11595758B2

    公开(公告)日:2023-02-28

    申请号:US17177178

    申请日:2021-02-16

    Applicant: Apple Inc.

    Abstract: A MEMS speaker can include an electrostatically driven, corrugated MEMS structure to move air without a magnet, coil, or traditional speaker membrane, and thus provide a low-power, compact speaker with a large acoustically active area in a small volume. Neighboring folds in the corrugated MEMS structure may form pairs of MEMS electrodes that can be pushed together and/or pulled apart to deform the MEMS structure in a breathing motion that generates pressure differentials on opposing sides of the corrugated MEMS structure to generate sound.

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