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    Acoustic chambers damped with plural resonant chambers, and related systems and methods
    12.
    发明授权
    Acoustic chambers damped with plural resonant chambers, and related systems and methods 有权

    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.

    Inventor： Hongdan Tao ,  Anthony P. Grazian ,  Christopher Wilk ,  Matthew A. Donarski ,  Michael J. Newman ,  Onur I. Ilkorur

    IPC: H04R1/28 ,  H04R1/02

    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
    13.
    发明授权
    Front port resonator for a speaker assembly 有权

    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.

    Inventor： Anthony P. Grazian ,  Christopher Wilk ,  Claudio Notarangelo ,  Hongdan Tao ,  Michael J. Newman ,  Onur I. Ilkorur ,  Thomas H. Tsang

    IPC: H04R1/28 ,  H04R9/06

    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.

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