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| 一种精确计算换能器空间脉冲响应的快速方法 | |
| 引用本文： | 董明, 马宏伟, 陈渊, 杨平, 张广明. 一种精确计算换能器空间脉冲响应的快速方法[J]. 声学学报, 2015, 40(6): 850-854. DOI: 10.15949/j.cnki.0371-0025.2015.06.011 |
| 作者姓名： | 董明 马宏伟 陈渊 杨平 张广明 |
| 作者单位： | 1 西安科技大学机械工程学院 西安 710054; |
| 基金项目： | 国家自然科学基金(51074121)、中国博士后科学基金(2015M572653XB)、西安科技大学博士启动金(2014QDJ003)和培育基金(201332)、陕西省教育厅专项科学研究计划项目(15JK1455)资助 |
| 摘 要： | 空间脉冲响应被认为是最有效的瞬态声场计算方法,针对空间脉冲响应直接计算时需要很高的采样频率,导致数据量大、计算效率差的问题,推导了空间点与其在换能器平面的投影点脉冲响应之间的关系,提出了一种计算脉冲响应的快速算法,探讨了计算采样频率和插值采样频率对计算精度和计算效率的影响,研究发现,采用1000 MHz采样频率能够保证精度要求,采用500 MHz作为插值时的采样频率是较优的选择。该方法与直接求解相比,可提高计算效率18倍。 |
| 收稿时间： | 2014-06-07 |
| 修稿时间： | 2015-05-04 |
A high-speed method for computing the exact solution of spatial impulse response |
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| DONG Ming, MA Hongwei, CHEN Yuan, YANG Ping, ZHANG Guangming. A high-speed method for computing the exact solution of spatial impulse response[J]. ACTA ACUSTICA, 2015, 40(6): 850-854. DOI: 10.15949/j.cnki.0371-0025.2015.06.011 | |
| Authors: | DONG Ming MA Hongwei CHEN Yuan YANG Ping ZHANG Guangming |
| Affiliation: | 1 School of Mechanical Engineering, Xi'an University of Science and Technology Xi'an 710054;2 School of Science, Xi'an University of Science and Technology Xi'an 710054;3 National Institute of Metrology Beijing 100013;4 General Engineering Research Institute, Liverpool John Moores University Liverpool L3 3AF |
| Abstract: | The spatial impulse response method has typically been used as the 'gold standard' to simulate transient acoustic field due to its excellent accuracy in the linear domain. To ensure the accuracy, a high sampling frequency was used which results in a large amount of data being processed, in order to improve time-consuming, a fast algorithm for impulse response calculation was proposed based on the impulse response between observed point and the projected point, and the critical parameters select were analyzed, the result verifies 1000 MHz as calculation sampling frequency and 500 MHz as interpolation sampling frequency is a better choice. This method can improve the computation efficiency 18 times than the direct solving. |
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