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    • 5. 发明申请
    • DRIVE SIGNAL DISTRIBUTION FOR DIRECT FIELD ACOUSTIC TESTING
    • 用于直接场声学测试的驱动信号分配
    • WO2013063491A1
    • 2013-05-02
    • PCT/US2012/062255
    • 2012-10-26
    • LARKIN, PaulISAACS, ArthurSULLIVAN, Michael
    • LARKIN, PaulISAACS, ArthurSULLIVAN, Michael
    • G01N29/14
    • G01M7/00G01N29/14G01N29/4427G01N29/46
    • A direct field acoustic testing system provides an acoustic field having a higher degree of spatial uniformity. The system includes a control microphone, a controller, a combiner, and at least four acoustic transducers. The controller is operatively coupled to the control microphone such that the controller receives at least one input signal from the control microphone and provides at least four separately controllable controller output signals. The combiner combines the at least four separately controllable output signals to form at least four secondary output signals, each composed of combinations of one or more of the at least four separately controllable controller output signals. Each of the at least four transducers is operatively coupled to at least one of the at least four secondary output signals such that the output of the transducer varies in response to changes in at least two of the at least four separately controllable controller output signals.
    • 直接场声学测试系统提供具有较高空间均匀度的声场。 该系统包括控制麦克风,控制器,组合器和至少四个声换能器。 控制器可操作地耦合到控制麦克风,使得控制器从控制麦克风接收至少一个输入信号并且提供至少四个可分离地控制的控制器输出信号。 组合器组合至少四个可独立控制的输出信号以形成至少四个次级输出信号,每个副输出信号由至少四个可独立控制的控制器输出信号中的一个或多个组合组成。 所述至少四个换能器中的每一个可操作地耦合到所述至少四个次级输出信号中的至少一个,使得所述换能器的输出响应于所述至少四个可分离的所述控制器输出信号中的至少两个的变化而变化。