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- FINITE ELEMENT ANALYSIS OF RADIATED NOISE FIELD IN PIPES VIBRATION 管道振动引起辐射噪声场的有限元分析
- radiated noise field 辐射噪声场
- Reduce tire/wheel unbalance and tire radiated noise. 减少车胎/轮不平衡性和车胎的辐射噪声。
- A separation method of naval ship radiated noise sources using measure data of radiated noise was introduced. 介绍一种从舰艇辐射噪声数据中分离辐射噪声源的方法.
- A method for extracting modulated information from radiated noise was discussed. 摘要讨论了一种从辐射噪声中提取调制信息的联合方法。
- Such damage can be caused by EMI or radiated noise from factory equipment surrounding the encoder. 这样的损坏可以是由编码器周围的工厂设备的电磁或放射性噪音所造成。
- Shielding is required because high impedance circuitry is susceptible to pickup of spurious radiated noise. 由于高阻电路容易拾取杂散的辐射噪声,所以需要采取屏蔽措施。
- A Voice Activity Detection (VAD) method for microphone array signals in directional noise field is proposed. 该文提出一种在方向性噪声场中多路麦克风信号同时进行有音/无音检测(VAD)的方法。
- Anisotropic degree of horizontal direction and vertical direction in the sea surface noise field are discussed. 论证了海面噪声场垂直与水平方向噪声的各向异性程度。
- The results show that the method can effectively separate the dynamic modulation from other parts of radiated noise, and extract harmonic features. 结果表明,该方法可以有效地实现动态调制分量与其他信号的分离,准确提取谐波特征。
- The simulation results are in accordance with the characteristics of the radiated noise at near distance in the foreign literature,which thus ... 仿真结果与国外文献提供的船舶水下辐射噪声近场特性吻合,验证了所建模型的正确性。
- Vibration characteristics of an engine oilpan are analyzed using FEM and radiated noise from the oilpan surface is researched. 利用有限元法分析某发动机油底壳的振动特性,对其表面辐射噪声进行研究。
- YAN Shefeng, MA Yuanliang.A numerical method for simulating broadband undersea noise field for hydrophone array[J], 2003, 22(1) :30-32. [3]鄢社峰;马远良.;一种海洋宽带噪声场数值模拟方法[J]
- The result shows that these structural changes may help to lower the vibration of the oil pan, and finally reduce the radiated noise. 结果表明,改变加强板结构可以减小油底壳的振动,进而降低了发动机的噪声。
- A multi-channel adaptive control system is developed and used to attenuate the analogized noise field and satisfied results are obtained in the controlled area. 一个多通道自适应控制系统被应用于该模拟声场的主动控制实验,并在控制区域取得了满意的降噪效果。
- Low radiation noise based on its toroidal construction.? 环形结构辐射噪音低.
- Based on the physical causes and spectral characteristics of torpedo radiated noise line spectra, this paper researches on feature extraction of torpedo target . 基于鱼雷辐射噪声的物理特性和线谱特征,探讨了一种鱼雷目标特征提取方法。
- A vector-hydrophone array simulator can generate the target radiated noise and the ambient noise.Its application can effectively shorten the developing cycle of a digital sonar. 模拟器可以模拟实际海洋环境中目标的辐射特性和噪声特性,应用模拟器可以有效地缩短声纳的研制周期。
- Compared with traditional DEMON analysis, the result shows that modulated information of radiated noise of naval ships can be extracted more quickly through wavelet and Hilbert transform. 其结果表明;相对于传统DEMON分析;利用小波以及希尔伯特变换可以更快更好地提取舰船辐射噪声的调制信息.
- The field artillery pounded away at the for tress. 野战炮兵连续炮击那座要塞。