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首页> 外文会议>2011 International Conference on Electronic Mechanical Engineering and Information Technology >Research on sound intensity probe whose frequency band can be adjusted
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Research on sound intensity probe whose frequency band can be adjusted

机译：可调节频段的声强探头的研究

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摘要

The distance of microphones in sound intensity probe have great relations with effective sound frequency band measured during measuring sound intensity,. To adapt different measured frequencies, the position of every microphone in sound intensity probe should be adjusted. On the basis of discussing the theory of measuring sound intensity with four microphones from three dimensions, using the theory about keeping place of brace framework and parallelogram, we designed a new 3D sound intensity probe including four microphones. Because space among different microphones in sound intensity probe can be adjusted, it can choose appropriate measurement bandwidth according to the range of sound frequencies measured actually. 3D sound intensity probe with four microphones, whose measurement frequency can de adjusted, retained original advantages of 3D sound intensity probe, and overcome the shortcomings of measuring fixed bandwidth.
机译：声强探头中麦克风的距离与在测量声强时测得的有效声带有很大关系。为了适应不同的测量频率，应调整每个麦克风在声强探头中的位置。在讨论了从三个维度使用四个麦克风测量声音强度的理论的基础上，利用关于支撑框架和平行四边形的保持位置的理论，我们设计了一种新的3D声音强度探头，其中包括四个麦克风。由于可以调节声强探头中不同麦克风之间的空间，因此可以根据实际测量的声频范围选择合适的测量带宽。具有四个麦克风的3D声强探头，其测量频率可以调整，保留了3D声强探头的原始优点，并克服了测量固定带宽的缺点。

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