Sound wave control device
    11.
    发明授权
    Sound wave control device 失效
    声波控制装置

    公开(公告)号:US4726444A

    公开(公告)日:1988-02-23

    申请号:US904852

    申请日:1986-09-08

    IPC分类号: G10K11/30 H04R1/34 G10K11/00

    CPC分类号: G10K11/30 H04R1/345

    摘要: Disclosed herein is a sound wave control device which is shaped in a lens form or a prism form from an acoustically rigid porous material, wherein numerous paths having different path lengths are provided and the apparent medium density is varied. This second wave control device is used to improve the sound quality and the directivity of the sound waves from a speaker and the directional control of noises.

    摘要翻译: 本文公开了一种声波控制装置,其从声刚性多孔材料成型为透镜形式或棱镜形式,其中提供具有不同路径长度的多个路径,并且表观中等密度变化。 该第二波控制装置用于改善来自扬声器的声波的声音质量和方向性以及噪声的方向控制。

    Vibration free container for transportation
    15.
    发明授权
    Vibration free container for transportation 失效
    无振动的运输容器

    公开(公告)号:US4877136A

    公开(公告)日:1989-10-31

    申请号:US182706

    申请日:1988-04-18

    IPC分类号: B65D81/07

    CPC分类号: B65D81/07

    摘要: A vibration free container for transportation comprises vibration isolating device which are arranged under the container and comprises a lower layer and an upper layer. The lower layer consists of at least two long laminated rubber bodies in the form of a parallelepiped extending in parallel with each other and upper layer consists of a plurality of column-shaped vibration isolators fixed between a bottom plate of the container and upper surfaces of the lamianted rubber bodies. Each of the laminated rubber bodies comprises rubber layers and metal plates alternately laminated. In another aspect the vibration free container comprises an outer casing and an inner casing received in the outer casing, and the vibration insulating device is interposed between the outer and inner casing to support the inner casing relative to the outer casing.

    摘要翻译: 用于运输的无振动容器包括布置在容器下方并包括下层和上层的防振装置。 下层由平行六面体形式的至少两层长的层叠橡胶体组成,并且上层由固定在容器的底板和容器的上表面之间的多个柱状隔振器 跛脚橡胶体。 每个层压橡胶体包括交替层压的橡胶层和金属板。 在另一方面,无振动容器包括容纳在外壳中的外壳和内壳,并且隔振装置插入在外壳和内壳之间,以相对于外壳支撑内壳。

    Noise reducing apparatus
    16.
    发明授权
    Noise reducing apparatus 失效
    降噪装置

    公开(公告)号:US4840251A

    公开(公告)日:1989-06-20

    申请号:US251290

    申请日:1988-09-30

    CPC分类号: H02K5/24 G10K11/175

    摘要: A noise reducing apparatus in the form of a hollow body comprising two or more passage groups consisting of a plurality of passages. The length of each passage is determined such that the sound waves emitted from the passages of the adjacent passage groups form plane waves which are shifted by a half wavelength so that plane waves interfere each other. The apparatus can be secured to an opening of construction and reduce the level of sound pressure from a sound source without any closed shield construction surrounding the sound source.

    摘要翻译: 一种中空体形式的降噪装置,包括由多个通道组成的两个或多个通道组。 每个通道的长度被确定为使得从相邻通道组的通道发射的声波形成偏移了半波长的平面波,使得平面波相互干扰。 该装置可以固定到结构的开口并且降低来自声源的声压的水平,而不围绕声源的任何封闭的屏蔽结构。

    Device for controlling a propagation direction of noise
    17.
    发明授权
    Device for controlling a propagation direction of noise 失效
    用于控制噪声传播方向的装置

    公开(公告)号:US4158401A

    公开(公告)日:1979-06-19

    申请号:US703985

    申请日:1976-07-09

    摘要: A device for controlling a propagation direction of noise, which is preferably associated with a sound insulating wall to significantly improve its sound reducing effect of alleviating noise emitted from a noise source such as a railroad, highway and the like on which an electric car and automobiles run. The device comprises a hollow structural body composed of a plurality of elongated vertical hollow passages arranged at right angles to a substrate and spaced apart from each other by means of partition walls. The upper noise inlet side surface of the hollow passages face a propagation direction of noise emitted from the noise source and serve to refract and lag in phase the noise passed therethrough, thereby producing a sound reducing region located intermediate between a direct sound propagation and the refracted sound propagation. In one embodiment, a pair of hollow structural bodies are arranged in opposition to each other to form an arch type device. In another embodiment, the hollow structural body may be provided at its noise inlet or outlet side surface with an extension of the hollow passages.

    摘要翻译: 一种用于控制噪声传播方向的装置,其优选地与隔音壁相关联,以显着改善其减轻从诸如铁路,公路等的噪声源发出的噪声的声音降低效果,其中电动汽车和汽车 跑。 该装置包括中空结构体,该中空结构体由多个细长的垂直中空通道构成,该垂直中空通道以与基底成直角的方式布置并且通过分隔壁彼此间隔开。 中空通道的上部噪声入口侧表面面对从噪声源发出的噪声的传播方向,并且用于使通过的噪声相位折射和滞后,从而产生位于直接声音传播和折射之间的声音降低区域 声音传播。 在一个实施例中,一对中空结构体彼此相对布置以形成拱形装置。 在另一个实施例中,中空结构体可以设置在其噪声入口或出口侧表面,并具有中空通道的延伸部分。

    Device for controlling a propagation direction of noise
    20.
    发明授权
    Device for controlling a propagation direction of noise 失效
    用于控制噪声传播方向的装置

    公开(公告)号:US4069768A

    公开(公告)日:1978-01-24

    申请号:US686338

    申请日:1976-05-14

    CPC分类号: G10K11/175 E01F8/0041

    摘要: A device for controlling a propagation direction of noise which is preferably associated with a sound insulating wall to significantly improve its sound reducing effect of alleviating noise emitted from a noise source such as a railroad, highway and the like on which an electric car and automobiles run. The device comprises a hollow structural body composed of a plurality of elongate hollow passages superimposed one upon the other and spaced apart from each other. The passages are arranged in a propagation direction of noise emitted from the noise source and serve to refract and lag in phase the noise passed therethrough, thereby producing a sound reducing region located intermediate between a direct propagation sound and the refraction propagation sound.

    摘要翻译: 一种用于控制噪声的传播方向的装置,其优选地与隔音壁相关联,以显着地改善其减轻由电动汽车和汽车运行的诸如铁路,高速公路等的噪声源发出的噪声的声音降低效果 。 该装置包括一个中空结构体,该中空结构体由多个细长的中空通道组成,该多个细长的中空通道彼此叠置并彼此间隔开。 通道沿着从噪声源发出的噪声的传播方向布置,并且用于折射和滞后相位的噪声,从而产生位于直接传播声音和折射传播声音之间的声音降低区域。