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运用近场声全息检测技术,对按编磬形状制作的模拟“钢磬”进行了实验研究,首次获得其在154和367Hz两种频率下的振模及空间矢量声强分布,表明这种新的成象技术是研究低频振动体及其声场的有效手段。
The near-field acoustic holography is used to study the simulation of the steel “磬” made in the form of knit, shape. For the first time, the mode and space vector sound intensity distribution at 154 and 367Hz are obtained. It shows that this new Imaging technology is an effective method to study the low-frequency vibrating body and its sound field.