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    • 21. 发明申请
    • Method and synthesizing impulse response and method for creating reverberation
    • 方法和合成脉冲响应和产生混响的方法
    • US20070183602A1
    • 2007-08-09
    • US11703309
    • 2007-02-06
    • Yoshinori TakahashiMikio TohyamaHiroaki Fujita
    • Yoshinori TakahashiMikio TohyamaHiroaki Fujita
    • H04R5/00
    • G10K15/12H04S7/305
    • An impulse response synthesis method is carried out by a dispersion calculation process for calculating a dispersion of phase characteristics in association with a given room based on a volume of the room, a degree of sound absorption of the room, and a distance between a sound source and a receiving point arranged in the room, a noise creation process for creating a noise having the dispersion of the phase characteristics calculated in the dispersion calculation process, a trend addition process for adding a phase trend to the noise created by the noise creation process in accordance with the distance between the sound source and the receiving point and obtaining a phase characteristic of a minimum-phase component from the noise added with the phase trend, and a synthesis process for synthesizing an impulse response based on the phase characteristic of the minimum-phase component, the impulse response being used to create reverberation for the room.
    • 脉冲响应合成方法是通过色散计算处理进行的,该色散计算处理用于基于房间的体积,房间的吸声度和声源之间的距离来计算与给定房间相关联的相位特性的色散 以及布置在房间中的接收点,用于产生具有在色散计算处理中计算的相位特性的色散的噪声的噪声产生过程,用于将由噪声产生过程产生的噪声相加的相位趋势加到 根据声源和接收点之间的距离,并根据加上相位趋势的噪声获得最小相位分量的相位特性,以及合成处理,用于根据最小相位分量的相位特性合成脉冲响应, 相位分量,脉冲响应用于创建房间的混响。
    • 27. 发明授权
    • Porous polyolefin film, process for producing same, and use thereof
    • 多孔聚烯烃膜,其制造方法及其用途
    • US06767622B2
    • 2004-07-27
    • US09926006
    • 2001-10-31
    • Kazuyuki HadaYoshinori Takahashi
    • Kazuyuki HadaYoshinori Takahashi
    • B32B300
    • C08J5/18A61F13/42A61F13/51462A61F13/51496C08J2323/08Y10T428/249956Y10T428/249967Y10T428/24998Y10T428/249993
    • The present invention provides a porous polyolefin film abounding in air permeability and moisture permeability and having extremely high degree of light transmission and tear strength, a process for producing same and intended use thereof. This porous polyolefin film is produced, for example, by stretching an unstretched polyolefin film having a resin composition of 100 parts by weight of polyolefin, 50-150 parts by weight of an inorganic filler having a 50% median diameter of at least 2 &mgr;m but less than 7 &mgr;m measured according to the light-scattering method, and 2-20 parts by weight of a wax of polyolefin series in at least uniaxial direction at an area magnification of 1.1-1.5 times, and possesses physical properties of a water vapor transmission rate of at least 1000 g/m2·24 hrs., a light transmission of at least 65%, and a tear strength of at least 0.6 N.
    • 本发明提供一种多孔聚烯烃膜,其具有透气性和透湿性,并且具有极高的透光和撕裂强度,其制造方法及其用途。 该多孔聚烯烃膜例如通过拉伸具有100重量份聚烯烃的树脂组合物的未拉伸聚烯烃膜,50-150重量份的50%中值粒径至少为2μm的无机填料制成,但是 根据光散射法测定小于7μm,并且以至少单轴方向的2-20重量份的聚烯烃系列以1.1-1.5倍的面积放大倍数,并且具有水蒸汽透过率的物理性质 速率至少为1000g / m 2 .24小时,透光率至少为65%,撕裂强度至少为0.6N。