The present disclosure relates to a noise reduction device, a noise reduction method, and a program capable of reducing noise in a more stable and effective manner. Signal processing is performed to generate a reference signal representing a waveform of noise on the basis of an estimation value indicating estimation of an acoustic characteristic in a route from each of a predetermined number of speakers to a microphone. Moreover, signal processing is performed for an error signal representing a waveform of an error measured by the microphone in accordance with an amplitude-frequency characteristic obtained from the corresponding one of the acoustic characteristics. Then, a filter coefficient with which the error signal becomes zero is calculated under adaptive algorithm with reference to the reference signal. The reference signal is filtered by using the filter coefficient to obtain a control signal. The control signal is supplied to the corresponding one of the predetermined number of output units. The present technology is applicable to a noise cancelling system equipped in a closed space such as an interior of a vehicle, for example.


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    Title :

    NOISE SUPPRESSION DEVICE, NOISE SUPPRESSION METHOD, AND PROGRAM


    Additional title:

    GERÄUSCHDÄMPFUNGSVORRICHTUNG, GERÄUSCHDÄMPFUNGSVERFAHREN UND PROGRAMM
    DISPOSITIF DE SUPPRESSION DE BRUIT, PROCÉDÉ DE SUPPRESSION DE BRUIT, ET PROGRAMME


    Contributors:

    Publication date :

    2020-12-09


    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 / H04M TELEPHONIC COMMUNICATION , Fernsprechverkehr



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