A microphone picks-up voice of a driver. A first echo suppression unit outputs a voice signal after first echo suppression based on a voice signal of the driver and a voice signal after echo suppression in the past (first reference signal) stored in a buffer memory. A second echo suppression unit outputs a voice signal after second echo suppression based on a voice signal of the driver and a voice signal after the echo suppression in the past (second reference signal) stored in a buffer memory. An output signal selector selects one of the voice signals after the first echo suppression or the voice signal after the second echo suppression according to a detection result of the presence or absence of a system variation by a system variation detector, and causes a speaker to output the selected voice signal.


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    Titel :

    Acoustic echo suppression device and acoustic echo suppression method


    Beteiligte:
    MIYAMOTO MASANARI (Autor:in) / OHASHI HIROMASA (Autor:in) / TANAKA NAOYA (Autor:in)

    Erscheinungsdatum :

    06.10.2020


    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 / H04B TRANSMISSION , Übertragung



    ACOUSTIC ECHO SUPPRESSION DEVICE AND ACOUSTIC ECHO SUPPRESSION METHOD

    MIYAMOTO MASANARI / OHASHI HIROMASA / TANAKA NAOYA | Europäisches Patentamt | 2018

    Freier Zugriff

    Realtime Performance of Acoustic Echo Canceler and Postfilter for Residual Echo Suppression in the Car Environment

    Enzner, G. / Mauler, D. / Vary, P. | British Library Conference Proceedings | 2004