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.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    NOISE SUPPRESSION DEVICE, NOISE SUPPRESSION METHOD, AND PROGRAM


    Weitere Titelangaben:

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


    Beteiligte:
    ITABASHI TETSUNORI (Autor:in) / ASADA KOHEI (Autor:in) / OSAKO KEIICHI (Autor:in) / HAYASHI SHIGETOSHI (Autor:in)

    Erscheinungsdatum :

    09.12.2020


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    H04M TELEPHONIC COMMUNICATION , Fernsprechverkehr / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



    NOISE SUPPRESSION DEVICE, NOISE SUPPRESSION METHOD, AND PROGRAM

    HAYASHI SHIGETOSHI / KURODA YOSHIYUKI / ITABASHI TETSUNORI | Europäisches Patentamt | 2024

    Freier Zugriff

    NOISE SUPPRESSION DEVICE, NOISE SUPPRESSION METHOD AND PROGRAM

    ITABASHI TETSUNORI / ASADA KOHEI / OSAKO KEIICHI et al. | Europäisches Patentamt | 2016

    Freier Zugriff

    NOISE SUPPRESSION DEVICE, NOISE SUPPRESSION METHOD, AND PROGRAM

    MAKINO KENICHI / ISEKI AKIHIRO / ITABASHI TETSUNORI | Europäisches Patentamt | 2024

    Freier Zugriff

    NOISE SUPPRESSION DEVICE, NOISE SUPPRESSION METHOD, AND PROGRAM

    ITABASHI TETSUNORI / ASADA KOHEI / OSAKO KEIICHI et al. | Europäisches Patentamt | 2016

    Freier Zugriff