To provide an active noise reduction device capable of suppressing a degradation in a noise reduction effect when the temperature changes.SOLUTION: An active noise reduction device 10 includes a correction amount calculation unit 18 for calculating a first correction amount for reducing the influence of the temperature characteristic of a speaker SP0 used to correct the phase of the simulated transfer characteristic which simulates a transfer characteristic from a position of the speaker SP0 to a position of a microphone M based on temperature information, a correction unit 14 for generating a corrected reference signal by applying the simulated transfer characteristic corrected by the calculated first correction amount to a reference signal, and a filter coefficient updating unit 15 which sequentially updates a coefficient of the adaptive filter using an error signal and the generated corrected reference signal.SELECTED DRAWING: Figure 4

    【課題】温度が変化したときの騒音低減効果の低下を抑制することができる能動騒音低減装置を提供する。【解決手段】能動騒音低減装置10は、温度情報に基づいて、スピーカSP0の位置からマイクロフォンMの位置までの伝達特性を模擬した模擬伝達特性の位相の補正に用いるスピーカSP0の温度特性の影響を低減するための第一補正量を算出する補正量算出部18と、算出した第一補正量によって補正された模擬伝達特性を基準信号に適用した補正後基準信号を生成する補正部14と、誤差信号と生成した補正後基準信号とを用いて適応フィルタの係数を逐次更新するフィルタ係数更新部15と、を備える。【選択図】図4


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    Title :

    ACTIVE NOISE REDUCTION DEVICE, MOBILE DEVICE, AND NOISE REDUCTION METHOD


    Additional title:

    能動騒音低減装置、移動体装置、及び、騒音低減方法


    Contributors:

    Publication date :

    2020-06-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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