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.
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).
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.
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.
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.
应用推荐