NOISE REDUCTION SYSTEM AND NOISE REDUCTION METHOD

    公开(公告)号:US20240098408A1

    公开(公告)日:2024-03-21

    申请号:US18176213

    申请日:2023-02-28

    IPC分类号: H04R3/00 G10K11/16

    CPC分类号: H04R3/00 G10K11/16

    摘要: According to one embodiment, a noise reduction system includes a microphone, a loudspeaker, and processing circuitry. The processing circuitry switches an operating mode between a control mode and a path characteristic measurement mode, includes a control filter that generates a control signal that causes the loudspeaker to output a control sound for reducing noise, based on a detection signal obtained by detecting a first sound including the noise with the microphone, measures a path characteristic including an acoustic characteristic between the loudspeaker and the microphone, and generates the control filter by using a measurement result of the path characteristic and a noise feature signal including a feature of the noise.

    Audio device for outputting sound having uniform sound quality

    公开(公告)号:US11930344B2

    公开(公告)日:2024-03-12

    申请号:US17414835

    申请日:2019-12-17

    发明人: Oanjin Kim

    IPC分类号: H04R9/06 H04R3/00

    CPC分类号: H04R9/06 H04R3/00

    摘要: An audio device according to an embodiment set forth in the present document comprises: a housing comprising a first surface, a second surface that faces the first surface, and side surfaces that surround the space between the first surface and the second surface; a vibration element disposed on the first surface; a microphone which acquires sound generated by the vibration of an external object by the vibration element; a printed circuit board disposed inside the housing; a processor disposed on the printed circuit board; and a communication circuit which is electrically connected to the processor, and receives a first audio signal from an external electronic device, wherein the processor, when the vibration element is attached to an external object, generates a second audio signal such that the vibration element vibrates the external object, causes the microphone to acquire a third audio signal generated by the vibration of the external object, corrects the first audio signal on the basis of the deviation between the second audio signal and the third audio signal, and can make the vibration element vibrate the external object on the basis of the corrected first audio signal. Various other embodiments inferred from the specification are also possible.

    VOICE-CONTROLLED WELDING CAP
    70.
    发明公开

    公开(公告)号:US20240065366A1

    公开(公告)日:2024-02-29

    申请号:US17987046

    申请日:2022-11-15

    发明人: HAIBING WU

    摘要: The present disclosure discloses a voice-controlled welding cap, which comprises a welding cap body, wherein the outer side of the welding cap body is provided with a mask, the inner side of the welding cap body is provided with a panel frame, a head ring, a connecting plate and an optical sensor, the inner side of the panel frame is provided with a main control chip and a language module input unit, and the language module input unit comprises a microphone, a voice chip and a peripheral resistance-capacitance device; the main control chip uses an STC8H 8BIT microprocessor control unit, the microphone is connected with the voice chip, and the voice chip, the mask and the optical sensor are all connected with the main control chip.