To provide means capable of exhibiting a sufficient volume reducing effect by an acoustic metal material (sound reflection material) including a sheet and a support part.SOLUTION: The sound isolation method for reducing a volume of sound collected by sound collecting means such as an occupant's ear using a sound reflection material structure is configured such that a distance between the sound collecting means and the surface of a sound reflection material of the sound reflection material structure in a normal direction is 80 mm or larger. The sound reflection material includes an elastic sheet, and a support part that supports and divides the sheet into sections. The surface rigidity (k) and the surface density (m) of the sheet in the sections satisfy the relation of an expression 1.SELECTED DRAWING: None

    【課題】シートと支持部とを含む音響メタマテリアル(音反射材)による音量の低減効果を十分に発揮する手段を提供する。【解決手段】音反射材構造体を用い、乗員の耳等の集音手段により集音される音の音量を低減させる遮音方法であって、集音手段と、音反射材構造体の音反射材の表面に対する法線方向の距離が80mm以上となるように配置する。ここで、音反射材は、弾性を有するシートと、シートを支持し区画部に区画する支持部とを備える。区画部におけるシートの面剛性(k)およびシートの面密度(m)は、下記数式1の関係を満足する。【選択図】なし


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    Title :

    SOUND ISOLATION SYSTEM AND SOUND ISOLATION METHOD


    Additional title:

    遮音システムおよび遮音方法


    Contributors:
    MIURA SUSUMU (author) / MINAMI KENTA (author)

    Publication date :

    2021-12-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    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



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