Acoustic device
    5.
    发明授权
    Acoustic device 失效
    声学装置

    公开(公告)号:US06282298B1

    公开(公告)日:2001-08-28

    申请号:US09389492

    申请日:1999-09-03

    IPC分类号: H04R2500

    摘要: 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 unfavorable shapes of members. Members with combined pistonic action drive and bending wave excitement at centers of mass and geometry are featured.

    摘要翻译: 声学装置具有横向厚度延伸的构件,并且能够承受由于所述构件在期望的操作声学频率范围内所需的可实现的声音作用而产生的自然弯曲波振动的共振模式的面分布导致相应声音作用的弯曲波。 使用包括其变化在内的刚度的面积分布来获得弯曲波传感器的期望位置和/或从固有不利的构件形状的良好谐振模式声学作用。 具有组合活塞驱动和弯曲波激发在质量和几何中心的成员的特征。

    Active acoustic devices
    6.
    发明授权
    Active acoustic devices 有权
    主动声学装置

    公开(公告)号:US06522760B2

    公开(公告)日:2003-02-18

    申请号:US09233037

    申请日:1999-01-20

    IPC分类号: H04R2500

    摘要: Active acoustic device comprises a panel member (11) having distribution of resonant modes of bending wave action determining acoustic performance in conjunction with a transducer (31-34). The transducer (31-34) is coupled to the panel member (11) at a marginal position. The arrangement is such as to result in acoustically acceptable action dependent on said distribution of active said resonant modes. Methods of selecting the transducer location, or improvement by location of localized marginal clamping, rely on assessing best or better operative interaction of said transducer (31-34) and the panel members (11) according to parameters of acoustic output for the device as an acoustic radiator.

    摘要翻译: 主动声学装置包括具有与换能器(31-34)一起确定声学性能的弯曲波动作用的共振模式分布的面板构件(11)。 传感器(31-34)在边缘位置处联接到面板构件(11)。 这种布置是导致声学上可接受的动作取决于所述有源谐振模式的所述分布。 选择换能器位置或通过局部边缘夹紧的位置改进的方法依赖于根据装置的声输出的参数来评估所述换能器(31-34)和面板构件(11)的最佳或更好的操作相互作用,作为 声辐射器

    Acoustic display screen
    7.
    发明授权
    Acoustic display screen 失效
    声屏显示

    公开(公告)号:US06389935B1

    公开(公告)日:2002-05-21

    申请号:US09029056

    申请日:1998-07-08

    IPC分类号: H04R2500

    摘要: A display screen (32), e.g., a projection screen comprising a panel having a light reflective surface, characterised in that the screen is a distributed mode acoustic radiator loudspeaker having a transducer (9) mounted wholly and exclusively thereon to vibrate the radiator to cause it to resonate to provide an acoustic output.

    摘要翻译: 显示屏(32),例如包括具有光反射表面的面板的投影屏幕,其特征在于,所述屏幕是分布式模式声辐射扬声器,其具有完全和专门地安装在其上的振动器(9),以使散热器振动, 它共鸣提供声输出。