The present disclosure relates to a noise reduction device and a noise reduction method 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. Moreover, signal processing is performed for an error signal representing a waveform of an error measured by a microphone in accordance with an amplitude-frequency characteristic. 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 reduction device and noise reduction method


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

    Erscheinungsdatum :

    2019-04-09


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    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 / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler



    NOISE REDUCTION DEVICE, NOISE REDUCTION METHOD, AND NOISE REDUCTION PROGRAM

    KURASHIGE NORIO | Europäisches Patentamt | 2020

    Freier Zugriff

    NOISE REDUCTION DEVICE, VEHICLE, NOISE REDUCTION SYSTEM, AND NOISE REDUCTION METHOD

    TAJI RYOSUKE / TANNO KEITA / ISAMI MONE et al. | Europäisches Patentamt | 2021

    Freier Zugriff

    Noise reduction device, vehicle, and noise reduction method

    TANI MITSUHIRO | Europäisches Patentamt | 2023

    Freier Zugriff

    NOISE REDUCTION DEVICE AND NOISE REDUCTION SYSTEM

    KUBOTA KENICHI | Europäisches Patentamt | 2019

    Freier Zugriff

    NOISE REDUCTION DEVICE AND NOISE REDUCTION METHOD

    MATSUYAMA SOHEI | Europäisches Patentamt | 2021

    Freier Zugriff