声全息方法是分析噪声场的一种有效手段。
Acoustic holography is an effective method to analysis noise fields.
本文介绍了一种用于噪声分析研究的声全息技术。
This paper presents a new techniques named acoustical holography that can be used for analysis and study of noise.
本文探讨了进行近场声全息测量时需要考虑的问题。
Some practical issues to be considered when making NAH measurement were discussed.
脉冲氩离子激光用于液面法声全息提高了动态声全息的成象质量。
The pulsed argon laser thus obtained is used as a reconstruction light source for liquid surface acoustical holography, resulting in a greatly improved image quality.
脉冲氩离子激光用于液面法声全息提高了动态声全息的成象质量。
The pulsed argon laser thus obtained is used as a reconstruction light source for liquid surface acoustical holography, resulting in a greatly improved image qua...
目前的绝大部分声全息研究都是针对自由声场中简单声源进行的。
At present, however, most of the research is focused on the simple source noise in the full space (free acoustic field).
连续扫描声全息声源识别定位技术是对以往声全息实验方法的改进。
The acoustic holography technique for sound source identification and position by the method of continuously scanning improves the previous acoustic holography experiment.
提出空间声场分离技术，突破了近场声全息(NAH)的应用局限。
Sound field separation technique has been proposed, which overcomes the limitation on applications of near_field acoustic holography (NAH).
本文提出利用声全息原理，对运动状态下的汽车噪声源进行识别的方法。
This paper presents the acoustical holography method which can be used to identify noise source on a moving vehicle.
根据近场声全息(NAH)的原理，建立了全息实验所需要的采集、分析系统。
According to the principle of near-field acoustic holography (NAH), the system of data acquisition and analysis needed in holographic experiments have been constructed.
因其具有此优点，近场声全息技术迅速地成为一种声源识别和声场可视化的强有力工具。
Because of such special features, the NAH technique becomes one of the most powerful tools to identify sound sources and visualize sound field.
针对于实际工况，重点研究了半自由空间中柱面声全息的算法，使声全息理论更加贴合实际。
In view of the actual condition, this paper paid more attention to the cylinder acoustical holography algorithm in half-free space that is more applied.
半自由声场环境下的声源重建和声场预测研究对声全息技术走向实际应用具有非常重要的意义。
The study on the holographic reconstruction and prediction of a semi-free field is valuable for the practical applications of the acoustic holography technique.
作者介绍了识别汽车噪声源的常用方法，并对其中得到广泛应用的声全息法进行了较详细的论述。
This paper introduces the common methods in identifying vehicle noise, and gives a introduction of the method of acoustic holography which has been extensively applied now.
采用基于分布源边界点法的近场声全息技术对运转状态下的罗茨真空泵进行了噪声源识别和定位研究。
The distributed source boundary point method(DSBPM) based nearfield acoustic holography(NAH) is used for identifying and localizing noise sources of the roots vacuum pump.
从近场声全息原理出发，利用声波沿不同方向传播的特点，针对平面、柱面和球面全息测量建立了波数域内的声场分离公式。
According to the NAH theory and propagating characteristics along different directions, sound field separation technique can be established in the wave-number domain.
分析了实空间离散格林函数的特点和平面声全息重构卷积计算的特殊性，推导了在重构条件下二维循环卷积与重构卷积的关系。
Characteristics of the discrete real-space Green′s function and particularities of the discrete algorithm of the planar acoustical holography reconstruction convolution are analyzed.
因而，基于波叠加法的声全息就不存在边界面上的参数插值和奇异积分等问题，而这些问题是基于边界元法的声全息所固有的。
Therefore, there are no problems such as parameters interpolation, singular integration etc. in WSA based acoustic holography, which are inherent to BEM based NAH.
利用声全息分析方法对一辆汽车进行了噪声分析。结果显示声全息方法也是一种有效的噪声源识别手段，在一些方面还有较大的优越性。
Some interesting results are obtained about the noise of a vehicle, which show acoustical holography is an effective method for noise source identification and have obvious advantages in some aspects.
利用二次曝光全息干涉术实现了对单轴式声悬浮声压场的研究。
By using double -exposed holographic interferometry, the distribution of sound pressure in the...
利用二次曝光全息干涉术实现了对单轴式声悬浮声压场的研究。
By using double -exposed holographic interferometry, the distribution of sound pressure in the...
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