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    Audio source localization
    1.
    发明授权
    Audio source localization 有权

    公开(公告)号：US11671756B2

    公开(公告)日：2023-06-06

    申请号：US16997778

    申请日：2020-08-19

    Applicant: Meta Platforms Technologies, LLC

    Inventor： Vladimir Tourbabin ,  Jacob Ryan Donley

    IPC: H04R3/00 ,  G01S3/803 ,  G01S3/808 ,  G10L15/28 ,  H04R1/08 ,  H04R29/00

    CPC classification number: H04R3/005 ,  G01S3/803 ,  G01S3/808 ,  G10L15/28 ,  H04R1/08 ,  H04R29/005 ,  H04R2410/00

    Abstract: An electronic device localizes an audio source by normalizing an amplitude of an audio signal over a time period. The electronic device receives, from one or more microphones of the electronic device, signal(s) representative of audio emitted by an audio source over a time period. The electronic device estimates amplitudes of the signal(s) at a first time within the time period and at a second time within the time period, where the second time is different from the first time. The electronic device normalizes the amplitudes associated with the first and second times to generate normalized amplitudes. The electronic device determines a combined amplitude representative of the audio emitted by the audio source by combining the normalized amplitudes. The electronic device determines, based at least in part on the combined amplitude and motion of the electronic device, an estimated position of the audio source relative to the electronic device.

    Memory recall of historical data samples bucketed in discrete poses for audio beamforming
    7.
    发明授权
    Memory recall of historical data samples bucketed in discrete poses for audio beamforming 有权

    公开(公告)号：US11659324B1

    公开(公告)日：2023-05-23

    申请号：US17503565

    申请日：2021-10-18

    Applicant: META PLATFORMS TECHNOLOGIES, LLC

    Inventor： Jacob Ryan Donley ,  Nava K. Balsam ,  Vladimir Tourbabin

    IPC: H04R1/40

    CPC classification number: H04R1/406

    Abstract: A system and method for storing data samples in discrete poses and recalling the stored data samples for updating a sound filter. The system determines that a microphone array at a first time period is in a first discrete pose of a plurality of discrete poses, wherein the plurality of discrete poses discretizes a pose space. The pose space includes at least an orientation component and may further include a translation component. The system retrieves one or more historical data samples associated with the first discrete pose, generated from sound captured by the microphone array before the first time period, and stored in a memory cache (e.g., for memorization). The system updates a sound filter for the first discrete pose using the retrieved one or more historical data samples. The system generates and presents audio content using the updated sound filter.

    Systems and methods for classifying beamformed signals for binaural audio playback
    8.
    发明授权
    Systems and methods for classifying beamformed signals for binaural audio playback 有权

    公开(公告)号：US11638111B2

    公开(公告)日：2023-04-25

    申请号：US16905411

    申请日：2020-06-18

    Applicant: META PLATFORMS TECHNOLOGIES, LLC

    Inventor： Jacob Ryan Donley ,  Vladimir Tourbabin ,  Peter Dodds ,  Ravish Mehra

    IPC: H04S7/00 ,  H04N5/04 ,  H04N5/60 ,  H04R3/00 ,  H04R1/40

    Abstract: The disclosed computer-implemented method may include receiving a signal for each channel of an audio transducer array on a wearable device. The method may also include calculating a beamformed signal for each beam direction of a set of beamforming filters for the wearable device. Additionally, the method may include classifying a first beamformed signal from the calculated beamformed signals into a first class of sound and a second beamformed signal from the calculated beamformed signals into a second class of sound. The method may also include adjusting, based on the classifying, a gain of the first beamformed signal relative to the second beamformed signal. Furthermore, the method may include converting the beamformed signals into spatialized binaural audio based on a position of a user. Finally, the method may include transmitting the spatialized binaural audio to a playback device. Various other methods, systems, and computer-readable media are also disclosed.

    Wearer identification based on personalized acoustic transfer functions
    9.
    发明授权
    Wearer identification based on personalized acoustic transfer functions 有权

    公开(公告)号：US11526589B2

    公开(公告)日：2022-12-13

    申请号：US16526498

    申请日：2019-07-30

    Applicant: Meta Platforms Technologies, LLC

    Inventor： Jacob Ryan Donley ,  Vladimir Tourbabin ,  Vamsi Krishna Ithapu

    IPC: G06F21/32 ,  H04R1/40 ,  H04R3/00 ,  H04R5/027 ,  H04S7/00

    Abstract: A wearable device includes an audio system. In one embodiment, the audio system includes a sensor array that includes a plurality of acoustic sensors. When a user wears the wearable device, the audio system determines an acoustic transfer function for the user based upon detected sounds within a local area surrounding the sensor array. Because the acoustic transfer function is based upon the size, shape, and density of the user's body (e.g., the user's head), different acoustic transfer functions will be determined for different users. The determined acoustic transfer functions are compared with stored acoustic transfer functions of known users in order to authenticate the user of the wearable device.

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