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    Ultraminiature dynamic speaker for a fully in-ear monitor
    11.
    发明授权
    Ultraminiature dynamic speaker for a fully in-ear monitor 有权

    公开(公告)号：US11422392B2

    公开(公告)日：2022-08-23

    申请号：US17134913

    申请日：2020-12-28

    Applicant: Meta Platforms Technologies, LLC

    Inventor： Chuming Zhao ,  Drew Stone Briggs ,  Michael Edward Franks ,  Derek Wallin

    IPC: G10K11/16 ,  G02C11/00 ,  G02B27/01 ,  H04R1/10 ,  G10K11/178

    Abstract: An in-ear device is implemented as part of an audio system to present a user with improved audio content within an artificial reality system. The in-ear device is a fully integrated device with an internal microphone, an external microphone, and a transducer in which portions of the transducer form portions of the body of the device. This integration of transducer into the body of the in-ear device reduces the size of the in-ear device and allows for placement deeper within the ear canal of the user. The transducer generates audio content based on instructions received from an audio system that may be located on a device that is external to the in-ear device. The external microphone provides hear-through functionality, while the internal microphone provides feedback information to the audio system.

    Microphone assembly with tapered port
    12.
    发明授权
    Microphone assembly with tapered port 有权

    公开(公告)号：US12200469B2

    公开(公告)日：2025-01-14

    申请号：US18383599

    申请日：2023-10-25

    Applicant: Meta Platforms Technologies, LLC

    Inventor： David Brokenshire ,  Chuankeat Kho ,  Pablo Francisco Faundez Hoffmann ,  Chuming Zhao

    IPC: H04R5/02 ,  G06F3/01 ,  H04S7/00 ,  H04R1/10

    Abstract: Embodiments relate to an audio system that performs equalization of audio signals based on one or more diffuse field head-related transfer functions (HRTFs) and device-specific data. User-specific data and device-specific data (i.e., transducer-specific data) are applied to an acoustic model to predict an acoustic response for a user. An equalization filter is then determined using the acoustic response and the one or more diffuse field HRTFs. The equalization filter is applied to a processed version of an audio signal to create a modified version of the audio signal. The modified version of the audio signal is presented to the user via a transducer array of the audio system. The audio system can further include a microphone assembly that reduces the Helmholtz resonance effect.

    Systems and methods for characterization of mechanical impedance of biological tissues
    15.
    发明授权
    Systems and methods for characterization of mechanical impedance of biological tissues 有权

    公开(公告)号：US11727769B2

    公开(公告)日：2023-08-15

    申请号：US17572878

    申请日：2022-01-11

    Applicant: Meta Platforms Technologies, LLC

    Inventor： Morteza Khaleghimeybodi ,  Chuming Zhao ,  Scott Porter

    IPC: H04B3/36 ,  G08B6/00

    CPC classification number: G08B6/00

    Abstract: A sensor system includes an actuator, an accelerometer coupled with the actuator, a rigid member, a transducer, and one or more processors. The actuator generates motion. The accelerometer outputs an acceleration signal responsive to at least the motion of the actuator. The rigid member extends from a first end coupled with the accelerometer to a second end. The transducer is coupled with the second end of the rigid member. The transducer can be configured to couple with a load, and can output a force signal responsive to at least a portion of the motion of the actuator transmitted to the transducer via the rigid member. The one or more processors determine a mechanical impedance of the load based at least on the acceleration signal and the force signal.

    AUDIO DEVICE APPLICATIONS
    16.
    发明公开
    AUDIO DEVICE APPLICATIONS 审中-公开

    公开(公告)号：US20230239626A1

    公开(公告)日：2023-07-27

    申请号：US18127506

    申请日：2023-03-28

    Applicant: Meta Platforms Technologies, LLC

    Inventor： Limin Zhou ,  Chuming Zhao ,  Rex Pinegar Price ,  Mekell Jiles ,  Kevin Connor

    IPC: H04R9/04 ,  B81B7/02 ,  H04R29/00 ,  H04R9/06 ,  H05K1/02

    CPC classification number: H04R9/046 ,  B81B7/02 ,  H04R29/001 ,  H04R9/06 ,  H04R9/045 ,  B81B2201/04 ,  H05K1/0271

    Abstract: A coil assembly for integration into a transducer is presented. The coil assembly may include a metal bobbin assembly, a wire coil, and one or more nonconductive printed circuit board (PCB) stiffeners. A speaker that renders micro noise in an artificial reality environment for improving simulated presence is further presented. The speaker may generate a plurality of micro noises based in part on the determined state of the virtual object. The speaker may spatialize the plurality of micro noises, such that the plurality of micro noises appears to originate from the virtual object. A speaker for speaker diaphragm motion detection using optical MEMS sensors is further presented. Optical MEMS sensors are used to optically monitor displacement of one or more portions of a speaker diaphragm. The speaker may be configured to determine that a speaker diaphragm is in rocking mode and move the speaker diaphragm out of rocking mode.

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