公开(公告)号：US11832084B2

公开(公告)日：2023-11-28

申请号：US17498544

申请日：2021-10-11

Applicant: META PLATFORMS TECHNOLOGIES, LLC

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

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

CPC classification number: H04S7/304 ,  G06F3/012 ,  H04S7/307 ,  H04R1/1008 ,  H04R5/02 ,  H04S7/306 ,  H04S2400/11 ,  H04S2420/01

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.

公开(公告)号：US12160703B1

公开(公告)日：2024-12-03

申请号：US17893059

申请日：2022-08-22

Applicant: Meta Platforms Technologies, LLC

Inventor： Rex Pinegar Price ,  Daniel Warren ,  Chuming Zhao

IPC: H04R1/28 ,  H04R1/10 ,  H04R3/00

Abstract: An audio system comprises a plurality of membranes within an enclosure. A first surface of each of the plurality of membranes is part of a shared back volume within the enclosure and pressure within the shared back volume is configured to be isobaric. A second surface of each of the membranes is part of a front volume within the enclosure that includes a plurality of ports. A controller of the audio system is configured to drive the plurality of membranes. In a mode of operation, the controller is configured to match audio output between the plurality of ports, forming pressure waves of equal amplitude and opposite phase and generating a substantially dipole or linear quadrupole sound wave radiation pattern for frequencies above a predefined threshold and mismatch audio output between the plurality of ports for frequencies at or below the predefined threshold to generate a substantially monopole or cardioid sound wave radiation pattern.

公开(公告)号：US11956588B2

公开(公告)日：2024-04-09

申请号：US18099855

申请日：2023-01-20

Applicant: Meta Platforms Technologies, LLC

Inventor： Drew Stone Briggs ,  Morteza Khaleghimeybodi ,  Chuming Zhao ,  John Raymond Brodie

IPC: H04R1/10 ,  G01R27/02 ,  H04R5/04

CPC classification number: H04R1/1041 ,  G01R27/02 ,  H04R1/1083 ,  H04R5/04 ,  H04R2420/05 ,  H04R2460/13

Abstract: An electronic device may include one or more terminals configured to provide a voltage signal to an actuator. The electronic device may detect a current associated with the voltage signal provided by the terminal to the actuator. The electronic device may determine an impedance across associated with the actuator based on the voltage signal and the electrical current. The electronic device may compare the impedance to a threshold impedance to determine whether there is sufficient skin contact with the actuator. The electronic device may provide audio via cartilage conduction if there is sufficient contact based on comparing the impedance to the threshold impedance, or may output a notification to the user to adjust placement of the electronic device to improve contact.

公开(公告)号：US20240056763A1

公开(公告)日：2024-02-15

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: H04S7/00 ,  G06F3/01

CPC classification number: H04S7/304 ,  G06F3/012 ,  H04S7/307 ,  H04S7/306 ,  H04R1/1008

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.

公开(公告)号：US11700489B1

公开(公告)日：2023-07-11

申请号：US17470744

申请日：2021-09-09

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Scott Porter ,  Chuming Zhao ,  Antonio John Miller ,  Peter Daniel Clyde

IPC: H04R25/00 ,  H04R9/06 ,  H01F7/08 ,  H01F7/126 ,  H04R9/02 ,  H04R19/02

CPC classification number: H04R9/06 ,  H01F7/081 ,  H01F7/126 ,  H04R9/025 ,  H04R19/02 ,  H04R2201/003 ,  H04R2460/13

Abstract: A microelectromechanical system (MEMS) coil assembly is presented herein. In some embodiments, the MEMS coil assembly includes a foldable substrate and a plurality of coil segments. Each coil segment includes a portion of the substrate, two conductors arranged on the portion of the substrate. The substrate can be folded to stack the coil segments on top of each other and to electrically connect first and second conductors of adjacent coil segments. In some other embodiments, the MEMS coil assembly includes a plurality of coil layers stacked onto each other. Each coil layer includes a substrate and a conductor to form a coil. The conductors of adjacent coil layers are connected through a via. The MEMS coil assembly can be arranged between a pair of magnets. An input signal can be applied to the MEMS coil assembly to cause the MEMS coil assembly to move orthogonally relative to the magnets.

公开(公告)号：US20240214725A1

公开(公告)日：2024-06-27

申请号：US18393249

申请日：2023-12-21

Applicant: Meta Platforms Technologies, LLC

Inventor： Chuming Zhao ,  Andrew Chen ,  Ninus Brodin ,  Igor Markovsky ,  Kirk Erik Burgess ,  Peter Mikael Mogren ,  Rick Yuan Chao

IPC: H04R1/46

CPC classification number: H04R1/46 ,  H04R2201/023

Abstract: Apparatuses, systems, and methods for detecting sound via a wearable device are described herein. An example system may include a pair of glasses that include a nose pad that, when the pair of glasses are worn by a user, contacts a portion of a nose of the user at a contact point and a vibration sensor, included in the nose pad. The vibration sensor may be configured to receive vibrations produced by the user via the contact point, and convert the received vibrations into an electrical signal representative of the received vibrations. The system may also include a control device configured to receive the electrical signal, and convert the electrical signal into digital audio data. Various other apparatuses, systems, and methods are described herein.

公开(公告)号：US11570538B1

公开(公告)日：2023-01-31

申请号：US17183311

申请日：2021-02-23

Applicant: Meta Platforms Technologies, LLC

Inventor： Drew Stone Briggs ,  Morteza Khaleghimeybodi ,  Chuming Zhao ,  John Raymond Brodie

IPC: H04R1/10 ,  G01R27/02 ,  H04R5/04

Abstract: An electronic device may include one or more terminals configured to provide a voltage signal to an actuator. The electronic device may detect a current associated with the voltage signal provided by the terminal to the actuator. The electronic device may determine an impedance across associated with the actuator based on the voltage signal and the electrical current. The electronic device may compare the impedance to a threshold impedance to determine whether there is sufficient skin contact with the actuator. The electronic device may provide audio via cartilage conduction if there is sufficient contact based on comparing the impedance to the threshold impedance, or may output a notification to the user to adjust placement of the electronic device to improve contact.

公开(公告)号：US12069426B1

公开(公告)日：2024-08-20

申请号：US17738971

申请日：2022-05-06

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Chuming Zhao ,  Morteza Khaleghimeybodi ,  Nils Thomas Fritiof Lunner ,  Calvin Bernard Shaw ,  Yun Zhou ,  Xiaochu Yao

IPC: H04R1/28 ,  H04R1/02 ,  H04R1/10

CPC classification number: H04R1/2826 ,  H04R1/028 ,  H04R1/1008 ,  H04R2499/15

Abstract: An audio system includes a speaker having a transducer, where the speaker is positioned within an enclosure that forms a front volume and a rear volume on opposite sides of the transducer. The rear part of the enclosure defining the rear volume is formed of an acoustic metamaterial that defines a plurality of channels within the rear volume, where the number and dimensions of the channels is configured to virtual increase the rear volume to amplify a bass portion of sound produced by the speaker. In addition, the channels may be configured to match an impedance of the front volume to serve as an absorber for high frequency audio.

公开(公告)号：US11678103B2

公开(公告)日：2023-06-13

申请号：US17474541

申请日：2021-09-14

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： John Raymond Brodie ,  Morteza Khaleghimeybodi ,  Chuming Zhao ,  Drew Stone Briggs

IPC: H04R1/10 ,  H04R1/02 ,  H04R1/28 ,  H04R5/033

CPC classification number: H04R1/1066 ,  H04R1/028 ,  H04R1/2819 ,  H04R5/0335 ,  H04R2400/11 ,  H04R2460/13

Abstract: Embodiments relate to an audio system configured to provide enhancement of low audio frequencies. The audio system includes a tissue transducer and a speaker coupled to the tissue transducer. The tissue transducer is configured to be coupled to a tissue of a user (e.g., pinna of a user's ear). The speaker includes a diaphragm having a first surface and a second surface that is opposite the first surface. The first surface is configured to generate a first set of airborne acoustic pressure waves, and the second surface is configured to generate a backpressure. The tissue transducer is driven by the backpressure to vibrate the tissue to form a second set of acoustic pressure waves. The first set of airborne acoustic pressure waves and the second set of acoustic pressure waves together form audio content that is presented to the user.

公开(公告)号：US20220365375A1

公开(公告)日：2022-11-17

申请号：US17868219

申请日：2022-07-19

Applicant: Meta Platforms Technologies, LLC

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

IPC: 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.