1) noise source identification
![点击朗读](/dictall/images/read.gif)
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.
![点击朗读](/dictall/images/read.gif)
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
![点击朗读](/dictall/images/read.gif)
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
![点击朗读](/dictall/images/read.gif)
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
![点击朗读](/dictall/images/read.gif)
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
![点击朗读](/dictall/images/read.gif)
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
![点击朗读](/dictall/images/read.gif)
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