- low-frequency noise
- low-frequencynoise
- thump
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低频噪声的英文
例句与用法
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- By using this method , the impact on depressing the partial vibration and the radiation of the low frequency noise of the structure underwater is efficacious
采用增大局部结构刚度的方法，对于降低水下结构的局部振动与低频噪声辐射效果显著。 - It ' s of good performance not only in the case of hf noise cancellation like the adaptive line enhancement , but also in the case of lf noise cancellation just like the normal adaptive noise cancellation , and in practice it ' s proved to be efficient and robust
它兼有自适应谱线增强器有效滤除高频噪声信号和噪声对消器有效滤除低频噪声信号的特性，经仿真和实例表明，具有很强的噪声滤除能力和鲁棒性。 - Pointing to the data obtained from semi - physical simulation of certain helicopter which mainly has low - frequency noise , a data - processing method of depressing and filtering noise from the signal , using the pagoda - structure re - constructing arithmetic and the wavelet transform principle , is proposed
摘要针对直升机半物理仿真测量数据主要是低频噪声的特点，提出利用小波变换、塔式结构重构算法，对信号进行降噪滤波处理的方法。 - The low frequency noise of the ring - stiffened cylinder with double shell is depressed by increasing structure stiffness , the numerical simulation is adopted to evaluate the acoustics performance , find that the vibration and acoustic radiation of the structure could be depressed by increasing the structure stiffness within the discontinuous range of the low frequency
摘要通过增大双层加肋圆柱壳的刚度降低低频噪声，使用数值仿真技术，评价结构的声学性能，发现增大双层加肋圆柱壳结构刚度，可在低频段有限频率范围降低结构的振动与声辐射。 - Regarding the suspension system as a substructure ( subsystem ) appended on the car body , and considering the vibration transfer effect of the suspension system for the displacement excitation induced by unevenness of road surface , an explicit formula about the quantitative relationship between the sound pressure of low frequency interior noise and some of the suspension characteristic parameters of a vehicle , i . e . , the stiffness , the damping , the under suspension mass of suspension system , and the radial stiffness , the radial damping of tire , is deduced based on the dynamic substructure modification method for structure - acoustic coupling analysis of an automobile ' s passenger compartment
摘要基于车身乘坐室声振耦合的动态子结构修改方法，将汽车悬架系统视为附加于车身上的子结构（子系统） ，并结合悬架系统对路面不平度位移激励的振动传递效应，揭示出车内低频噪声的声压值与悬架系统刚度、阻尼、非悬挂质量以及轮胎径向刚度、径向阻尼间的直接定量关系。