| 基于波束形成法定位管内声源的改进方法 | |
| 钟迪 ; 朱民 ; ZHONG Di ; ZHU Min | |
| 2016-03-30 ; 2016-03-30 | |
| 关键词 | 声源定位 波束形成法 管道 monolayer graphene curvature elastic energy equations of motion plate thin film O422.8 |
| 其他题名 | Improved sound source localization in ducts with beamforming methods |
| 中文摘要 | 该文对基于波束形成法定位管道内声源的方法进行了优化研究。当管道内的声波频率接近管道的某一截止频率时,将有一个声学模态在声压中占主导地位,在应用波束形成法进行声源定位时会导致较大误差。该文提出一种改进方法,在声源定位计算式中去除最大声学模态的影响。通过模拟研究和实验研究进行验证,结果显示:管道内声源定位的效果和管道内传播的声学模态数有很大的关系,应用改进方法可以显著改善截止频率附近的管内声源定位效果。; This study optimizes the beamforming method to locate a sound source in a duct. For frequencies close to the cut-off frequencies,the received pressure is dominated by a single near-cut-off mode and the beamforming result can have significant error.This paper presents an optimization algorithm that discards the dominated mode.Simulation and tests show that the localization accuracy is very dependent on the number of spinning modes propagating in the duct.When the frequency is close to the cut-off frequency,the localization results are significantly improved by this algorithm. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/145010]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 钟迪,朱民,ZHONG Di,等. 基于波束形成法定位管内声源的改进方法[J],2016, 2016. |
| APA | 钟迪,朱民,ZHONG Di,&ZHU Min.(2016).基于波束形成法定位管内声源的改进方法.. |
| MLA | 钟迪,et al."基于波束形成法定位管内声源的改进方法".(2016). |
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