Transducer Surround Having A Barometric Vent

    公开(公告)号:US20250088791A1

    公开(公告)日:2025-03-13

    申请号:US18464747

    申请日:2023-09-11

    Applicant: Apple Inc.

    Abstract: A transducer assembly comprising: a frame positioned within an interior chamber defined by an enclosure comprising a port to an ambient environment; a surround comprising a fixed portion sealed to the frame and a movable portion dividing the interior chamber into a front volume chamber coupling a first side of the surround to the port and a back volume chamber coupled to a second side of the surround; and a barometric vent coupled to the fixed portion to vent a pressure between the front volume chamber and the back volume chamber.

    MEMS speaker
    2.
    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.

    DUAL FUNCTION TRANSDUCER
    3.
    发明申请

    公开(公告)号:US20210099804A1

    公开(公告)日:2021-04-01

    申请号:US16586130

    申请日:2019-09-27

    Applicant: Apple Inc.

    Abstract: A dual function transducer assembly comprising: a magnet motor assembly comprising a first magnet plate and a second magnet plate arranged in parallel to one another along a first axis; a sound output assembly coupled to the magnet motor assembly, the sound output assembly comprising a piston and a voice coil, and wherein the voice coil is arranged to cause a vibration of the piston in a direction parallel to the first axis; and a shaker assembly coupled to the magnet motor assembly, the shaker assembly comprising a first shaker coil and a second shaker coil arranged to cause a vibration of the magnet assembly in a direction parallel to a second axis that is perpendicular to the first axis.

    Continuous surround
    4.
    发明授权

    公开(公告)号:US10708694B2

    公开(公告)日:2020-07-07

    申请号:US15835365

    申请日:2017-12-07

    Applicant: Apple Inc.

    Abstract: A transducer assembly including a frame, a diaphragm positioned within the frame, a surround connecting the diaphragm to the frame, the surround having a corner section and a plurality of corrugations formed within the corner section, wherein each corrugation of the plurality of corrugations comprises a length dimension perpendicular to a line of maximum stress intersecting a radial axis of the corner section, a voice coil extending from one side of the diaphragm and a magnet assembly having a magnetic gap aligned with the voice coil.

    Acoustic chambers damped with plural resonant chambers, and related systems and methods

    公开(公告)号:US10397693B1

    公开(公告)日:2019-08-27

    申请号:US15917426

    申请日:2018-03-09

    Applicant: Apple Inc.

    Abstract: An acoustic enclosure has a housing at least partially defining an acoustic chamber for an acoustic radiator. The housing defines an acoustic port from the acoustic chamber to a surrounding environment. An acoustic resonator has a first resonant chamber and a second resonant chamber. The acoustic resonator also has a first duct to acoustically couple the first resonant chamber with the acoustic chamber and a second duct to acoustically couple the second resonant chamber with the first resonant chamber. An electronic device can have an electro-acoustic transducer. Circuitry in the electronic device can drive the electro-acoustic transducer to emit sound over a selected frequency bandwidth. Damping provided by the first and the second resonant chambers can de-emphasize one or more frequencies and/or extend a frequency response of the acoustic enclosure to improve perceived sound quality emitted by the electronic device.

    Front port resonator for a speaker assembly

    公开(公告)号:US10299032B2

    公开(公告)日:2019-05-21

    申请号:US15701335

    申请日:2017-09-11

    Applicant: Apple Inc.

    Abstract: A micro-speaker assembly including an enclosure having an enclosure wall separating a surrounding environment from an encased space, wherein the enclosure wall defines an acoustic port from the encased space to the surrounding environment; a sound radiating surface positioned within the encased space and dividing the encased space into a front volume chamber and a back volume chamber, wherein the front volume chamber is acoustically coupled to a first surface of the sound radiating surface and the acoustic port, and the back volume chamber acoustically coupled to a second surface of the sound radiating surface; and a resonator acoustically coupled to the front volume chamber, wherein the resonator comprises a neck acoustically coupled to an acoustic cavity, and an opening to the neck is positioned at a distance from the acoustic port that corresponds to a quarter wavelength resonance of the front volume chamber.

    Planar magnetic driver having trace-free radiant region

    公开(公告)号:US11617039B2

    公开(公告)日:2023-03-28

    申请号:US17175496

    申请日:2021-02-12

    Applicant: APPLE INC.

    Abstract: A planar magnetic driver including a radiating surface having a trace-free central region is described. The driver has a magnet defining an acoustic opening on a central axis. A diaphragm of the planar magnetic driver is held by mounts having a mounting profile around the central axis, and the diaphragm includes a radiating surface facing the acoustic opening. An innermost conductive trace on the diaphragm extends around a central region of the radiating surface within a magnetic flux of the magnet such that no conductive traces are on the central region. A radial distance between the innermost conductive trace and the mounting profile is less than another radial distance between the innermost conductive trace and the central axis. Accordingly, an excursion range of the diaphragm along the central axis is greater than a gap distance between the conductive trace and the magnet. Other aspects are also described and claimed.

    Dual function transducer
    9.
    发明授权

    公开(公告)号:US11070920B2

    公开(公告)日:2021-07-20

    申请号:US16586130

    申请日:2019-09-27

    Applicant: Apple Inc.

    Abstract: A dual function transducer assembly comprising: a magnet motor assembly comprising a first magnet plate and a second magnet plate arranged in parallel to one another along a first axis; a sound output assembly coupled to the magnet motor assembly, the sound output assembly comprising a piston and a voice coil, and wherein the voice coil is arranged to cause a vibration of the piston in a direction parallel to the first axis; and a shaker assembly coupled to the magnet motor assembly, the shaker assembly comprising a first shaker coil and a second shaker coil arranged to cause a vibration of the magnet assembly in a direction parallel to a second axis that is perpendicular to the first axis.

    FLAT TRANSDUCER FOR SURFACE ACTUATION

    公开(公告)号:US20210099807A1

    公开(公告)日:2021-04-01

    申请号:US17119567

    申请日:2020-12-11

    Applicant: Apple Inc.

    Abstract: A transducer assembly including a stiffener plate having a first side and a second side; a voice coil coupled to the second side of the stiffener plate; a magnet assembly positioned along the second side of the stiffener, the magnet assembly operable to produce a magnetic field that causes a movement of the magnet assembly relative to the voice coil; and a spring suspending the magnet assembly from the stiffener plate such that the movement of the magnet assembly drives a movement of the stiffener plate.

Patent Agency Ranking