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：US20240073589A1

公开(公告)日：2024-02-29

申请号：US18085370

申请日：2022-12-20

Applicant: Meta Platforms Technologies, LLC

Inventor： Rex Pinegar Price ,  Alan Ng ,  Calvin Bernard Shaw ,  Peter Mikael Mogren ,  Caroline Whelan ,  Trang Fisher ,  MohanRaj Manoharan

IPC: H04R1/28 ,  H04R1/02 ,  H04R1/10 ,  H04R1/22 ,  H04R9/02 ,  H04R9/06

CPC classification number: H04R1/2826 ,  H04R1/028 ,  H04R1/1008 ,  H04R1/1075 ,  H04R1/227 ,  H04R9/025 ,  H04R9/06 ,  H04R2499/15

Abstract: An audio device includes a first speaker and a second speaker. A front surface of a membrane of the second speaker faces a rear surface of a membrane of the first speaker. The membrane of the first speaker moves in an opposite direction than the membrane of the second speaker when the audio device outputs audio content. This configuration maintains isobaric pressure for a back volume shared between the first speaker and the second speaker, reducing vibration of the audio device when outputting audio content.

公开(公告)号：US11743648B1

公开(公告)日：2023-08-29

申请号：US17993727

申请日：2022-11-23

Applicant: Meta Platforms Technologies, LLC

Inventor： Tetsuro Oishi ,  Rex Pinegar Price ,  Limin Zhou ,  Michael Thomas Frank ,  Joshua James Barr ,  Michael Lee Butts

IPC: H04R5/033 ,  H04R1/10

CPC classification number: H04R5/033 ,  H04R1/1091

Abstract: A headset includes a speaker, such as a side firing dipole speaker. The headset includes a front chamber that receives sound waves from a first side of the speaker and a rear chamber that receives sound waves from a second side of the speaker. A control leak channel connects the front chamber and the rear chamber. An acoustic mesh may be located within the control leak channel. The speaker configuration is configured to reduce total harmonic distortion of the speaker, particularly in ranges such as 3-6 kHz, while maintaining the broadband efficiency of the speaker.

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.

公开(公告)号：US11540055B1

公开(公告)日：2022-12-27

申请号：US17383225

申请日：2021-07-22

Applicant: Meta Platforms Technologies, LLC

Inventor： Tetsuro Oishi ,  Rex Pinegar Price ,  Limin Zhou ,  Michael Thomas Frank ,  Joshua James Barr ,  Michael Lee Butts

IPC: H04R5/033 ,  H04R1/10

Abstract: A headset includes a speaker, such as a side firing dipole speaker. The headset includes a front chamber that receives sound waves from a first side of the speaker and a rear chamber that receives sound waves from a second side of the speaker. A control leak channel connects the front chamber and the rear chamber. An acoustic mesh may be located within the control leak channel. The speaker configuration is configured to reduce total harmonic distortion of the speaker, particularly in ranges such as 3-6 kHz, while maintaining the broadband efficiency of the speaker.