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    • 6. 发明专利
    • SOUND DETECTOR
    • JPH04335177A
    • 1992-11-24
    • JP10706191
    • 1991-05-13
    • TOSHIBA CORP
    • NAGAYASU KATSUYOSHI
    • G01H3/08G01N29/22G01N29/44G01S3/86
    • PURPOSE:To surely and easily perform the identification of the existence of a target sound in mixed sounds. CONSTITUTION:A mixed sound signal v0 in which an objective sound signal a0 and a nonobjective sound signal from a receiver 18 is input to a first module 11 having adaptive filters 13, 15 and a second module 12 receiving the output therefrom. Furthermore a reference signal u0 from a reference signal input part 17 is input to the first module 11, an input signal is adapted and identified in each module for the purpose of estimation and elimination and the objective signal a0 correlated with the reference signal u0 is obtained as the output signal of the second module 12. As the result, the existence of the objective sound signal a0 correlated with the reference signal u0 can be confirmed clearly and in addition the extraction of the objective sound signal a0 can be surely and easily performed.
    • 8. 发明专利
    • Protective device for fan built in apparatus
    • 风扇防护装置
    • JPS59211799A
    • 1984-11-30
    • JP8511483
    • 1983-05-17
    • Toshiba Corp
    • NAGAYASU KATSUYOSHI
    • F04D29/00F04D29/66F16P1/02
    • PURPOSE: To reduce remarkably noises by cutting out required portions of a protective plate opposed to a fan built in an apparatus to form a plurality of concentric protective members and form a connecting member for these protective members at a predetermined angle to the direction perpendicular to the fan.
      CONSTITUTION: In a protective plate 5 are disposed in equal intervals connecting members 8 for interconnecting a plurality of thin concentric protective members 7, 7 circumferentially of the concentric member 7. And an angle θ made by radial lines l
      1 , l
      2 connecting center O of an inscribed circle 9 and a circumscribed circle 10 of these connecting members 8 and points T
      1 , T
      2 on the connecting members 8 is set to 120°. Further, the angle θ is an angle (radian) made with the reference line passing the center O. Thus, when a fan is rotated and advances to any phase, it always cross the connecting member 8 at a certain distance from the center without crossing the member 8 at a time over the whole radius so that a shock force is small and thus a specified frequency sound produced by mutual action between the fan 3 and the protective plate 5 is reduced to attenuate noises.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:通过切除与内置在设备中的风扇相对的保护板的所需部分来减少显着的噪音,以形成多个同心保护构件,并且以与预定角度垂直的方向形成用于这些保护构件的连接构件 风扇。 构成:在保护板5中以相等的间隔布置连接构件8,用于互连同心构件7周向的多个薄的同心保护构件7,7。和由径向线l1,22连接的中心O的角度θ 内接圆9和这些连接构件8的外接圆10和连接构件8上的点T1,T2被设置为120度。此外,角度θ是通过中心O的参考线制成的角度(弧度) 因此,当风扇旋转并进入任何相位时,它总是在距离中心一定距离处跨过连接构件8,而不是在整个半径上一次穿过构件8,使得冲击力小,因此 通过风扇3和保护板5之间的相互作用产生的特定频率声音被减少以衰减噪声。