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    Detection and mitigation of a wind whistle
    11.
    发明授权
    Detection and mitigation of a wind whistle 有权

    公开(公告)号：US11984109B2

    公开(公告)日：2024-05-14

    申请号：US17901121

    申请日：2022-09-01

    Applicant: GoPro, Inc.

    Inventor： Erich Tisch

    IPC: G10K11/178

    CPC classification number: G10K11/17821 ,  G10K2210/105 ,  G10K2210/1051 ,  G10K2210/12821 ,  G10K2210/3018

    Abstract: An image capture device detects a wind whistle using two or more microphones. The image capture device includes a processor that obtains microphone signals from the two or more microphones and measures coherence values between the microphone signals across a frequency band. The frequency band includes frequency bins, and the processor measures a coherence value for each frequency bin. Based on a detection of an elevated coherence value in a frequency bin, the processor determines the presence of a whistle. The processor attenuates the frequency bin based on a determination that the elevated coherence value is above a threshold.

    Active noise control system
    16.
    发明授权
    Active noise control system 有权
    主动噪声控制系统

    公开(公告)号：US07854295B2

    公开(公告)日：2010-12-21

    申请号：US12475768

    申请日：2009-06-01

    Applicant: Isao Kakuhari

    Inventor： Isao Kakuhari

    IPC: F01N1/06 ,  F16F15/03 ,  G10K11/178 ,  F01N1/00 ,  F16F7/00 ,  F16F15/02 ,  G10K11/16

    CPC classification number: G10K11/178 ,  G10K2210/105 ,  G10K2210/1291

    Abstract: An active noise control apparatus and an active noise control system for reducing noise using an active vibrator, such that edges β of the vibrator (i.e. genesis locations of a bending moment of force caused by the vibrator) agree with positions α on a distribution of the bending moment of force caused by noise vibration of a panel, and such that the edges β of the vibrator are aligned with the positions α on the panel where a sign, of the distribution of the bending moment of force over the panel caused by the noise vibration, reverses. As a result, a control vibration approximate to the noise vibration can be excited. Accordingly, when the vibrator is fixed by agreeing the edges β of the vibrator with the positions α determined by noise frequency desired to be reduced, noise due to a target noise frequency can be effectively reduced.

    Abstract translation: 一种主动噪声控制装置和有源噪声控制系统，用于使用主动振动器减小噪声，使得边缘和bgr; （即由振动器产生的弯曲力矩的位置）与由面板的噪声振动引起的弯曲力矩的分布上的位置α一致，并且使得边缘＆bgr; 的振动器与面板上的位置α对齐，其中由噪声振动引起的面板上的弯曲力矩的分布的符号反转。 结果，可以激发接近噪声振动的控制振动。 因此，当通过使边缘＆bgr一致使振动器固定时; 由希望降低的噪声频率确定的位置α的振动器，可以有效地降低由于目标噪声频率引起的噪声。

    Cleaner
    17.
    发明授权
    Cleaner 有权

    公开(公告)号：US11992168B2

    公开(公告)日：2024-05-28

    申请号：US16960963

    申请日：2019-01-09

    Applicant: LG ELECTRONICS INC.

    Inventor： Jongchan Lee ,  Geunbae Hwang ,  Goondong Park

    IPC: A47L5/26 ,  A47L9/00 ,  A47L9/22 ,  A47L9/28 ,  G10K11/16 ,  G10K11/178

    CPC classification number: A47L5/26 ,  A47L9/0081 ,  A47L9/22 ,  A47L9/2836 ,  A47L9/2884 ,  G10K11/161 ,  G10K11/17883 ,  G10K2210/105

    Abstract: To achieve the objects described above, the cleaner according to some embodiments of the present disclosure includes a main body forming an airflow path through which air is sucked and exhausted; a dust separation unit disposed in the airflow path and configured to separate dust from air; a fan module disposed in the airflow path and configured to move the air in the airflow path; and a noise control module including a speaker and a detection unit detecting noise or vibration, and configured to cause an output of the speaker to be reduced a level of the noise of at least one frequency range of 1500 Hz or less the noise generated when the fan module is operated, based on the detection signal of the detection unit. wherein the main body includes an exhaust outlet through which air in the airflow path is exhausted and a sound outlet through which the sound of the speaker is exhausted, wherein the exhaust outlet and the sound outlet look the same direction relative to the main body.

    DETECTION AND MITIGATION OF A WIND WHISTLE
    18.
    发明公开
    DETECTION AND MITIGATION OF A WIND WHISTLE 审中-公开

    公开(公告)号：US20240078992A1

    公开(公告)日：2024-03-07

    申请号：US17901121

    申请日：2022-09-01

    Applicant: GoPro, Inc.

    Inventor： Erich Tisch

    IPC: G10K11/178

    CPC classification number: G10K11/17821 ,  G10K2210/105

    Abstract: An image capture device detects a wind whistle using two or more microphones. The image capture device includes a processor that obtains microphone signals from the two or more microphones and measures coherence values between the microphone signals across a frequency band. The frequency band includes frequency bins, and the processor measures a coherence value for each frequency bin. Based on a detection of an elevated coherence value in a frequency bin, the processor determines the presence of a whistle. The processor attenuates the frequency bin based on a determination that the elevated coherence value is above a threshold.

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