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    • 24. 发明授权
    • Acoustic devices
    • 声学装置
    • US06442282B2
    • 2002-08-27
    • US09935576
    • 2001-08-24
    • Henry AzimaMartin CollomsNeil Harris
    • Henry AzimaMartin CollomsNeil Harris
    • H04R2500
    • H04R5/02G07F9/02H04R1/24H04R7/045H04R2440/07H04R2499/15
    • Acoustic devices have members extending transversely of thickness and capable of sustaining bending waves causing consequential acoustic action by reason of areal distribution of resonant modes of natural bending wave vibration consonant with required achievable acoustic action of said member over a desired operative acoustic frequency range, Areal distribution of stiffness including variation(s) therein is used to get desired locations for bending wave transducers and/or good resonant mode acoustic action from inherently unfavourable shapes of members. Members with combined pistonic active drive and bending wave excitement at centers of mass and geometry are featured.
    • 声学装置具有横向厚度延伸的构件,并且能够承受弯曲波,由于在所需操作声频范围内由所述构件的所需可实现的声学作用引起的自然弯曲波振动辅助谐振模的面分布,从而产生相应的声音作用。 的刚度包括其中的变化用于获得用于弯曲波传感器的所需位置和/或从固有不利的构件形状的良好谐振模式声学作用。 具有在质量和几何中心组合的活塞主动驱动和弯曲波兴奋的构件。
    • 25. 发明授权
    • Acoustic devices
    • 声学装置
    • US06427016B1
    • 2002-07-30
    • US09246967
    • 1999-02-09
    • Henry AzimaNeil HarrisBijan Djahansouzi
    • Henry AzimaNeil HarrisBijan Djahansouzi
    • H04R2500
    • H04R29/001H04R7/045H04R2440/07
    • Acoustic devices rely on bending wave action in a panel member, particularly distribution of resonant modes of such bending wave action and related acoustically significant surface vibration over area of said panel member favourable to desired or at least acceptable acoustic device performance. The devices comply with selecting parameters of said panel member affecting said distribution, including configuration/geometry and/or bending stiffness(es), and/or location(s) of bending wave transducer(s) in said area of said panel member; the selecting being in accordance with analytical assessment of power transfer related characteristic(s) of said panel member thus said acoustic device concerned and desiderata therefor correlating with achieving said acoustic device performance.
    • 声学装置依赖于面板构件中的弯曲波动作用,特别是在所述面板构件的面积上的这种弯曲波作用和相关的声学显着表面振动的共振模式的分布有利于期望的或至少可接受的声学装置性能。 所述装置符合选择影响所述分配的所述面板构件的参数,包括所述面板构件的所述区域中的构造/几何形状和/或弯曲刚度和/或弯曲波换能器的位置; 所述选择是根据所述面板构件的功率传递相关特性的分析评估,因此所述声学装置及其所需的设备与实现所述声学装置性能相关。