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    METHODS, SYSTEMS, AND STORAGE MEDIUMS FOR MONITORING HEART RATE
    31.
    发明公开
    METHODS, SYSTEMS, AND STORAGE MEDIUMS FOR MONITORING HEART RATE 审中-公开

    公开(公告)号：US20240065565A1

    公开(公告)日：2024-02-29

    申请号：US18505071

    申请日：2023-11-08

    Applicant: SHENZHEN SHOKZ CO., LTD.

    Inventor： Xin ZHOU ,  Fengyun LIAO ,  Xin QI

    IPC: A61B5/024 ,  A61B5/00 ,  A61B5/11

    CPC classification number: A61B5/02416 ,  A61B5/11 ,  A61B5/721 ,  A61B5/7235 ,  A61B2562/0219 ,  A61B2562/0233

    Abstract: The present disclosure provides a method, system, and readable medium for monitoring a heart rate. The method may include: obtaining a first signal, the first signal including a target heart rate signal in a motion state; obtaining a motion signal corresponding to the motion state; identifying a second signal with a target frequency from the first signal based on a motion frequency corresponding to the motion signal, the target frequency originating from a linear superposition of the motion frequency and a heart rate frequency corresponding to the target heart rate signal; and determining the target heart rate signal by processing, based on the motion signal and the second signal, the first signal.

    ACOUSTIC DEVICES
    32.
    发明公开
    ACOUSTIC DEVICES 审中-公开

    公开(公告)号：US20240064460A1

    公开(公告)日：2024-02-22

    申请号：US18500088

    申请日：2023-11-01

    Applicant: SHENZHEN SHOKZ CO., LTD.

    Inventor： Zhen WANG ,  Jianing LIANG ,  Lei ZHANG ,  Xin QI

    IPC: H04R1/32

    CPC classification number: H04R1/32

    Abstract: The present disclosure discloses acoustic devices. The acoustic device may include a diaphragm; a housing configured to accommodate the diaphragm and form a first acoustic cavity and a second acoustic cavity respectively corresponding to a front side and a rear side of the diaphragm, wherein the diaphragm radiates sounds to the first acoustic cavity and the second acoustic cavity, respectively, and the sounds are guided through a first acoustic hole coupled with the first acoustic cavity and a second acoustic hole coupled with the second acoustic cavity, respectively; and a sound absorption structure, wherein the sound absorption structure is coupled with the second acoustic cavity and is configured to absorb the sound transmitted to the second acoustic hole through the second acoustic cavity in a target frequency range, the target frequency range including a resonant frequency of the second acoustic cavity.

    VOICE ACTIVITY DETECTION METHOD AND SYSTEM, AND VOICE ENHANCEMENT METHOD AND SYSTEM
    33.
    发明公开
    VOICE ACTIVITY DETECTION METHOD AND SYSTEM, AND VOICE ENHANCEMENT METHOD AND SYSTEM 审中-公开

    公开(公告)号：US20240046956A1

    公开(公告)日：2024-02-08

    申请号：US18370381

    申请日：2023-09-19

    Applicant: Shenzhen Shokz Co., Ltd.

    Inventor： Le XIAO ,  Chengqian ZHANG ,  Fengyun LIAO ,  Xin QI

    IPC: G10L25/78 ,  G10L21/0216

    CPC classification number: G10L25/78 ,  G10L21/0216 ,  G10L2021/02166

    Abstract: Microphone signals output by the microphone array satisfy a first model corresponding to a noise signal or a second model corresponding to a target voice signal mixed with a noise signal. A method and system may optimize the first model and the second model respectively by using maximization of a likelihood function and rank minimization of a noise covariance matrix as joint optimization objectives, and determine a first estimate of a noise covariance matrix of the first model and a second estimate of a noise covariance matrix of the second model; and determine, by using a statistical hypothesis testing method, whether the microphone signals satisfy the first model or the second model, so as to determine whether the target voice signal is present in the microphone signals, determine a noise covariance matrix of the microphone signals, and further perform voice enhancement on the microphone signals.

    VIBRATION SENSORS
    36.
    发明公开
    VIBRATION SENSORS 审中-公开

    公开(公告)号：US20230384147A1

    公开(公告)日：2023-11-30

    申请号：US18365976

    申请日：2023-08-05

    Applicant: SHENZHEN SHOKZ CO., LTD.

    Inventor： Yongshuai YUAN ,  Wenjun DENG ,  Yujia HUANG ,  Wenbing ZHOU ,  Fengyun LIAO ,  Xin QI

    IPC: G01H3/06 ,  H04R1/08 ,  H04R9/18

    CPC classification number: G01H3/06 ,  H04R1/083 ,  H04R9/18 ,  H04R9/046

    Abstract: Vibration sensors are provided. The vibration sensor may include: a vibration assembly, the vibration assembly including a mass element and an elastic element, and the mass element being connected to the elastic element; a first acoustic cavity, the elastic element constituting one of sidewalls of the first acoustic cavity, and the vibration assembly vibrating to make a volume of the first acoustic cavity change in response to an external vibration signal; an acoustic transducer, the acoustic transducer being in communication with the first acoustic cavity and the acoustic transducer generating an electrical signal in response to a volume change of the first acoustic cavity; and a buffer, the buffer limiting a vibration amplitude of the vibration assembly, wherein the acoustic transducer has a first resonance frequency, the vibration assembly has a second resonance frequency, and the second resonance frequency of the vibration assembly is smaller than the first resonance frequency.

    PIEZOELECTRIC SPEAKERS
    40.
    发明公开
    PIEZOELECTRIC SPEAKERS 审中-公开

    公开(公告)号：US20230329119A1

    公开(公告)日：2023-10-12

    申请号：US18167089

    申请日：2023-02-10

    Applicant: SHENZHEN SHOKZ CO., LTD.

    Inventor： Guangyuan ZHU ,  Lei ZHANG ,  Xin QI

    IPC: H10N30/20 ,  H04R17/00 ,  H10N30/50

    CPC classification number: H10N30/2047 ,  H04R17/00 ,  H10N30/2042 ,  H10N30/50

    Abstract: The present disclosure is of a piezoelectric speaker. The piezoelectric speaker includes a plurality of piezoelectric elements and a vibration transmission plate. Each piezoelectric element is configured to generate vibration based on an audio signal. The vibration transmission plate includes a plurality of elastic rods and a mass block, and each elastic rod connects the mass block and one of the plurality of piezoelectric elements. The mass block simultaneously receives the vibration of the plurality of piezoelectric elements and generates at least two resonance peaks in a frequency range of 20 Hz-40000 Hz.

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