| 基于模态分析的散布式扬声器幅频特性研究 |
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| 引用本文： | 罗良进,朱爱卿,周强,张永炬.基于模态分析的散布式扬声器幅频特性研究[J].电声技术,2010,34(8):23-26. |
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| 作者姓名： | 罗良进 朱爱卿 周强 张永炬 |
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| 作者单位： | 1. 台州学院物理与电子工程学院,浙江,台州,318000
2. 临海市第六中学,浙江,台州,317000 |
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| 摘 要： | 从薄板弯曲振动方程出发，论述了散布武平板扬声器薄板振动模态与声辐射模态和辐射声功率的内在关联。研究表明：振动模态简正频率密度和主导声辐射模态是影响辐射声功率的主要因素。试验证明，激励力所能激发的模态密度、模态阻尼对平板扬声器幅频特性有较大影响。
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| 关 键 词： | 平板扬声器 模态分析 声辐射模态 幅频特性 |
Amplitude-frequency Characteristic Study of Distributed Loudspeaker Based on Modal Analysis |
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| LUO Liangjin,ZHU Aiqing,ZHOU Qiang,ZHANG Yongju.Amplitude-frequency Characteristic Study of Distributed Loudspeaker Based on Modal Analysis[J].Audio Engineering,2010,34(8):23-26. |
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| Authors: | LUO Liangjin ZHU Aiqing ZHOU Qiang ZHANG Yongju |
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| Affiliation: | LUO Liangjin1,ZHU Aiqing2,ZHOU Qiang1,ZHANG Yongju1(1.School of Physical and Electronic Engineering,Taizhou University,Taizhou Zhejiang 318000,China,2.Sixth Middle School of Linhai,Taizhou Zhejiang 317000,China) |
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| Abstract: | Based on the plate flexural vibration equation,the vibration modes of the distributed flat-panel speaker,and inherent relationship between the acoustic radiation modes and radiated sound power are discussed.The studies show that the normal frequency density of vibration mode and the leading radiation mode are the main factors to influence the radiated sound power.The experimental results demonstrate that the modal density stimulated by the exciting force,and the modal damping have a great influence on the f... |
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| Keywords: | planar loudspeaker modal analysis acoustic radiation mode amplitude-frequency characteristic |
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