An active noise reduction device is used with a secondary noise source that generates a secondary noise and an error signal source that outputs an error signal corresponding to a residual sound caused by interference between the secondary noise and a noise. A µ-adjustment unit calculates a step-size parameter for updating a filter coefficient of an adaptive filter by multiplying a standard step-size parameter by a ratio of a standard representative input value corresponding to amplitude of a signal to a representative input value corresponding to the amplitude of the signal.


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    Title :

    ACTIVE NOISE REDUCTION DEVICE AND ACTIVE NOISE REDUCTION METHOD


    Additional title:

    VORRICHTUNG FÜR AKTIVE RAUSCHUNTERDRÜCKUNG UND VERFAHREN FÜR AKTIVE RAUSCHUNTERDRÜCKUNG
    DISPOSITIF DE RÉDUCTION ACTIVE DU BRUIT ET PROCÉDÉ DE RÉDUCTION ACTIVE DU BRUIT


    Contributors:

    Publication date :

    2020-02-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS , Scheinwiderstandsnetzwerke, z.B. Resonanzkreise



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