助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   有效声场 的翻译结果: 查询用时:0.2秒
图标索引 在分类学科中查询
所有学科
更多类别查询

图标索引 历史查询
 

有效声场
相关语句
  相似匹配句对
     all effective.
     全部有效
短句来源
     Chemotherapy was effective.
     化疗有效
短句来源
     The numerical results show that this method is effective in solving exterior acoustic problems.
     数值算例表明:该方法对于计算无限大外域声场有效的.
短句来源
     Finally,the modified HELS method was applied,and the sound field of a vibrating spheres sound source was investigated.
     结果表明,改进的HELS方法是一种非常有效声场重建算法.
短句来源
     Computer Simulation of an Enclosed Sound Field
     三维空间声场的计算机仿真
短句来源
查询“有效声场”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
没有找到相关例句


Broadband acoustic holography based on intensity measurement (BAHIM) is a new andpowerful field reconstruction technique. It allows one to predict the sound radiating field from a sourceand locate sound noise sources by measuring the nearfield sound intensity distribution on a measurementplane (hologram). In this paper, numerical analysis for different sources and parameters of the hologramat sample are given. Moreover, by the automated scanning two-hydrophones sound intensity measurementsystems, the experiment...

Broadband acoustic holography based on intensity measurement (BAHIM) is a new andpowerful field reconstruction technique. It allows one to predict the sound radiating field from a sourceand locate sound noise sources by measuring the nearfield sound intensity distribution on a measurementplane (hologram). In this paper, numerical analysis for different sources and parameters of the hologramat sample are given. Moreover, by the automated scanning two-hydrophones sound intensity measurementsystems, the experiment is carried out and the BAHIM method is applied to sound field analysis ofsubmerged spherical sound source. The results demonstrate the effectiveness of BAHIM. As a technique,the BAHIM can greatly enhance the ability for us to analyze and discern noise sources.

基于声强测量的宽带声全息(BAHIM)是一种新的有效的声场重建技术,在获得了测量面(全息面)上两个切向声强分量后,利用BAHIM可以预报声源的辐射场及噪声源定位。本文给出了不同声源和参数下BAHIM数值分析结果,井利用自行研制的双通道自动扫描声强测量系统进行了水下声源近场声辐射的BAHIM实验,结果证实了该方法的有效性,它增强了分析和识别噪声源的能力。

As an efficient and powerful way of sound field analysis, the planar near-field acoustical holography (NAH) has been widely applied to study the sound field and the vibration modes and radiating field of vibrating object. Based on introduction of the basic theory of planar near-field acoustical holography, the inaccurate problem of the particle velocity and sound intensity reconstruction by using the Planar NAH method is presented. The theoretical analysis and the simulation calculation have been done for demonstrating...

As an efficient and powerful way of sound field analysis, the planar near-field acoustical holography (NAH) has been widely applied to study the sound field and the vibration modes and radiating field of vibrating object. Based on introduction of the basic theory of planar near-field acoustical holography, the inaccurate problem of the particle velocity and sound intensity reconstruction by using the Planar NAH method is presented. The theoretical analysis and the simulation calculation have been done for demonstrating the problem, furthermore the limitation of the planar NAH is discussed.

平面近场声全息作为一种有效的声场分析方法被广泛用于声场分析和振动体的振动模态及其辐射声场的研究。在介绍了平面近场声全息理论的基础上,指出了利用该方法进行声场重建时存在质点振动速度和声强重建不准确的问题,并从理论分析和模拟计算两个方面给予了证明,在此基础上进一步分析了该方法的应用局限性。

The theory of the Helmholtz equation-least squares(HELS) method was researched,and a modified HELS method was proposed.The HELS method expresses sound field as a series of base functions,which are obtained by the Gram-Schmidt orthonormalization of spherical wave functions.The coefficients associated with these functions are determined by matching the solution of Helmholtz equation to the measured acoustic pressure at measured points.The ill pose and singularity problems were considered,and the SVD method was...

The theory of the Helmholtz equation-least squares(HELS) method was researched,and a modified HELS method was proposed.The HELS method expresses sound field as a series of base functions,which are obtained by the Gram-Schmidt orthonormalization of spherical wave functions.The coefficients associated with these functions are determined by matching the solution of Helmholtz equation to the measured acoustic pressure at measured points.The ill pose and singularity problems were considered,and the SVD method was proposed to determine the coefficients.Also,a loop iteration method was suggested to optimize the number of terms in the series.As a result,the HELS method becomes more robust and flexible.Finally,the modified HELS method was applied,and the sound field of a vibrating spheres sound source was investigated.

对Helmholtz方程最小二乘(HELS)方法的理论进行了研究,提出了一种改进的HELS方法,其基本思想是将辐射声场描述成一系列由球面波函数构成的正交函数的线性组合形式,组合系数通过配置场点的声压来确定.针对HELS方法重建声场过程中矩阵病态和奇异的问题,提出了采用奇异值分解的方法求解组合系数.此外,提出了采用循环迭代的优化方法确定线性组合的项数.这两点改进使得HELS方法更具有普适性、更为稳健.以一脉动球声源为实例,应用改进的HELS方法对其声场进行仿真研究.结果表明,改进的HELS方法是一种非常有效的声场重建算法.

 
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关有效声场的内容
在知识搜索中查有关有效声场的内容
在数字搜索中查有关有效声场的内容
在概念知识元中查有关有效声场的内容
在学术趋势中查有关有效声场的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社