PROBLEM TO BE SOLVED: To reduce external noise entering a cabin from outside a vehicle, especially, external noise entering the cabin from a door speaker.SOLUTION: A first speaker 50 is fitted to a door trim 30 constituting a door 1, and a second speaker 60 and a noise sensor 70 which detects external noise are fitted to an inner panel 20. A sound wave from the same sound source is output from the first and second speakers 50 and 60 so as to make the sound pressure of the sound wave larger than that when a single speaker is used, and a cancel wave canceling the external noise detected by the noise sensor 70 is output from the second speaker 60 so as to reduce external noise propagated into a cabin from outside the vehicle.SELECTED DRAWING: Figure 1

    【課題】車両外部から車内に侵入する外部ノイズ、特にドアスピーカから侵入する外部ノイズを低減する。【解決手段】ドア1を構成するドアトリム30に第1スピーカ50を取り付け、インナパネル20に第2スピーカ60と、外部ノイズを検出するノイズセンサ70とを取り付け、前記第1、第2スピーカ50、60からは同一音源からの音声波を出力させることで、該音声波の音圧をスピーカが単一の場合に比べて大きくすると共に、前記第2スピーカ60からは前記ノイズセンサ70が検出した外部ノイズをキャンセルするキャンセル波を出力させることで、車外から車室内に伝播する外部ノイズを低減する。【選択図】図1


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    Title :

    VEHICULAR ACOUSTIC DEVICE


    Additional title:

    車両用音響装置


    Contributors:

    Publication date :

    2017-11-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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