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标题：Investigations on the balloon as an impulse source ZZ
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盛开怒放 发表于：2011-4-25 23:11:58鬼佬真有意思.很细致地对气球做脉冲声源的特性做了研究.下面是摘要..有兴趣上最后的的链接下全文.
Measurements of impulses produced by bursting balloons are presented. Various sizes of balloons were popped with a mechanical device in an anechoic chamber and recorded with a spherical microphone array. The power responses and directivity of the balloons are analyzed. Results indicate that power responses have two emphasized frequencies which depend on balloon size and inflation level. Larger balloons radiated more energy and higher inflation levels resulted in stronger high frequency content. Balloon directivity patterns are stable over repetitions. However, balloons do not radiate omnidirectionally. The degree of omnidirectionality improves with balloon size and for midrange frequencies.
http://asadl.org/jasa/resource/1/jasman/v129/i1/pEL27_s1?bypassSSO=1
[此贴子已经被作者于2011-04-25 23:13:03编辑过]
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Completist 发表于：2011-4-28 23:29:54试着翻译了一下：
该脉冲响应测量通过瞬间爆破的气球来实现：各种尺寸大小的气球由放置在无响室中的一个机械装置来引爆，同是由一个球形的麦克风阵列来记录。通过分析气球的激励响应和指向性，结果显示其激励响应有两个主要的频率，它们取决于气球的大小以及充气的饱满程度。越大的气球辐射越高的能量，而且充气越饱满的气球具有更高的高频成分；在重复测量中显示其指向性很稳定。然而，气球的声波辐射并不是全指向性的。全指向性的角度随着气球尺寸增大而改善，同时也改善了其中频响应。
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Completist 发表于：2011-4-28 23:30:27
此主题相关图片如下：ballon-01.jpg
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Completist 发表于：2011-4-28 23:30:46此主题相关图片如下：ballon-02.jpg
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盛开怒放 发表于：2011-4-29 15:03:58研究对象简单，但方法不错。有点意思
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