1) noise source identification
声源识别
1.
Research on the technology for noise source identification on the surface of diesel engine;
柴油机表面噪声源识别技术研究
2.
Near-field beamforming is an effective method for noise source identification.
近场波束形成方法是有效进行噪声源识别的一种方法。
2) sound source identification
声源识别
1.
Research on the Improving Algorithm of A-weighted Wavelet Transform and the Analyzing Method of Acoustic Mode for I.C.Engine Sound Source Identification;
内燃机噪声源识别的声模态及A计权小波改进算法的研究
2.
Numeric Simulation and Experimental Research of Sound Source Identification with Beamforming Method;
波束形成方法在噪声源识别应用中的仿真和实验研究
3) Noise sources identification
声源识别
1.
In this paper near-field acoustic holography (NAH) is introduced into noise sources identification and localization, The theoretical analysis and the numerical simulation of different kinds of noise sources show: that in the case of complex sound sources, they can be identified and localized correctly, moreover, their vibration amplitude can be recognized very well.
将近场声全息(NAH)用于噪声源的识别和定位,对不同类型噪声源的数值模拟结果和理论分析表明:对于复杂声源,采用近场声全息方法可以精确地定位噪声源,并且能很好地分辨出各噪声源振幅的强弱;在波数域加窗滤波后,声压测量的误差对声源识别结果的影响不大。
4) Noise source identification
噪声源识别
1.
Application of virtual sound intensity analysis system in engine noise source identification;
虚拟式声强分析系统在发动机噪声源识别中的应用
2.
Internal noise source identification for cabins of construction machinery based on wavelet analysis method
工程机械驾驶室内部噪声源识别的小波分析方法
5) Noise sources identification
噪声源识别
1.
Experimental study on noise sources identification of vehicle based on microphone array technology
基于声阵列技术的汽车噪声源识别试验研究
6) noise identification
噪声源识别
1.
The origin and characters of mechanical noise in domestic air-conditioners are summarized,and several kinds of methods for mechanical noise identification are introduced.
文章对家用空调器机械噪声源的成因和特点进行了阐释,介绍了几种机械噪声源的识别方法,讨论了相关分析和谱分析等在机械噪声源识别中的应用,分析了家用空调器机械噪声源的识别方法,最后用一个实例验证了文中所述方法。
2.
A new approach to acoustic noise identification was proposed by introducing modern spectrum estimation and Grey Relational Analysis (GRA).
从声源上控制噪声可以大大减轻噪声治理的工作量,而且对促进生产低噪声产品研制,提高产品质量和寿命有直接效果,同时噪声源识别技术是声学测量技术的综合应用,具有很强的技术性,这些都具有很强的现实意义。
补充资料：点声源
点声源
Point source
点声源(point Source) 在空间上仅有明确位置而无范围的声源称为点声源。讨论声辐射时，定义点声源的概念是方便的。假如点声源的声辐射在径向的传播是直线(在球面波中，情况也相同)，那么根据能量守恒原理，辐射强度在任何方向的衰减和声源距离的平方成反比。实际上的物理声源并非数学上的点，但若距离极大于声源尺寸时，平方反比律可以是一个很好地近似。参阅“平方反比律”(inverse一square law)条。 〔小赫尔(Me A.Hull，Jr.)撰口
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条