According to one embodiment, a noise reduction device includes speakers, microphones, and a processing circuit. The speakers are arranged around a rotor and emit control sound based on control signals. The microphones are arranged around the rotor and convert the control sound and noise emitted by the rotor into microphone signals. The processing circuit generates the control signals for reducing acoustic power in positions of the microphones, based on the microphone signals, rotation speed of the rotor, and a phase of noise that reaches the microphones from the rotor.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Noise reduction device, flight vehicle, power generation device, and noise reduction method


    Beteiligte:
    GOTO TATSUHIKO (Autor:in) / ENAMITO AKIHIKO (Autor:in)

    Erscheinungsdatum :

    02.02.2021


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B64C AEROPLANES , Flugzeuge



    NOISE REDUCTION DEVICE, FLIGHT VEHICLE, POWER GENERATION DEVICE, AND NOISE REDUCTION METHOD

    GOTO TATSUHIKO / ENAMITO AKIHIKO | Europäisches Patentamt | 2019

    Freier Zugriff

    NOISE REDUCTION DEVICE, AIRCRAFT, POWER GENERATION DEVICE, NOISE REDUCTION METHOD AND NOISE REDUCTION PROGRAM

    GOTO TATSUHIKO / EBATO AKIHIKO | Europäisches Patentamt | 2019

    Freier Zugriff

    NOISE REDUCTION DEVICE, POWER CONVERSION DEVICE, VEHICLE, AND NOISE REDUCTION METHOD

    NAKATA HIDEKI / SEKI ATSUSHI / YUKAWA JUNICHI | Europäisches Patentamt | 2023

    Freier Zugriff

    NOISE REDUCTION DEVICE, VEHICLE, NOISE REDUCTION SYSTEM, AND NOISE REDUCTION METHOD

    TAJI RYOSUKE / TANNO KEITA / ISAMI MONE et al. | Europäisches Patentamt | 2021

    Freier Zugriff

    Noise reduction device, vehicle, and noise reduction method

    TANI MITSUHIRO | Europäisches Patentamt | 2023

    Freier Zugriff