The present invention is provided with a first control signal filter (104a) for inputting a cosine wave which oscillates at a control frequency, a second control signal filter (104b) for inputting a sine wave which oscillates at the control frequency, a control signal adder (105) for adding the output of the first control signal filter (104a) and the output of the second control signal filter (104b) and outputting a control signal, a filter coefficient updating unit (106) for updating a filter coefficient of the first control signal filter (104a) and the second control signal filter (104b), and a frequency correction value computing unit (107) for computing a frequency correction value for correcting the control frequency on the basis of the control signal and the control frequency.


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    Title :

    Active oscillation noise control device


    Contributors:

    Publication date :

    2015-07-22


    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






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