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acoustic filter
相关语句
  滤声器
     Therefore, a new kind of Mode-Selecting acoustic filter, which can pick out the single longitudinal wave component or transverse wave component at a certain frequency, isdesigned by using this kind of states.
     因此,利用这种态我们设计了一种简易而有效的选模滤声器,在某个需要的频率它可以方便地单独选择纵或横外来入射波。
短句来源
  “acoustic filter”译为未确定词的双语例句
     Synthesis of ZnO Thin Fihn for Surface Acoustic Filter Fabrication
     新型声表面波器件中氧化锌薄膜的研制
  相似匹配句对
     On the Filter
     关于共轭滤波器
短句来源
     Evolutionary Design for Surface Acoustic Wave Filter
     声表面波滤波器进化设计
短句来源
     On the Optimal Design of Surface Acoustic Wave Filter
     SAW滤波器优化设计研究
短句来源
     Filter Tuning
     滤波器调谐
短句来源
     Acoustic World
     声音的世界
短句来源
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  acoustic filter
The cell-retention efficiency of an air backflush mode of acoustic filter operation was greater than 95% and eliminated the need to pump the relatively shear sensitive insect cells.
      
Each sound can also be enhanced with one acoustic filter chosen from; obstruction, occlusion and exclusion.
      


A windowless resonant photoacoustic cell equipped withacoustic filters is described for continuous air pollution detection.Theproblem of absorption caused by window materials which limits thesensivity of photoacoustic method is solved by windowless design.Thecell is insensitive to external noise with the help of acoustic filters.Experimental results are in good agreement with the theoreticalcalculation.

本文报道了一种适合于大气污染物连续检测的带有声滤波器的无窗共振光声池.这种无窗池解决了由于窗口吸收而限制光声方法检测灵敏度的问题.同时由于声滤波器的作用,它对外部噪声不敏感,实验结果与理论计算相符。

A theoretical model is presented to describe the parametric acoustic field generated by a panel piston. The interaction region that is truncated by a low-pass acoustic filter can be viewed as a constant-intensity cylindrical source within the Rayleigh Distance of the piston. When the radius of the piston is much smaller than the length of the parametric region, this model is reduced to the Berktay's End-Fire Line Array model. Comparisons between numerical calculations and experimental measurement show...

A theoretical model is presented to describe the parametric acoustic field generated by a panel piston. The interaction region that is truncated by a low-pass acoustic filter can be viewed as a constant-intensity cylindrical source within the Rayleigh Distance of the piston. When the radius of the piston is much smaller than the length of the parametric region, this model is reduced to the Berktay's End-Fire Line Array model. Comparisons between numerical calculations and experimental measurement show that the generated acoustic field (especially near the axis) agrees well with the experiment.

提出了一种计算以圆形平面活塞辐射器作发射源的声截断参量阵辐射声场的理论模型。即把由声低通滤波器截断的高频原波参量作用区在活塞辐射器的瑞利距离之内可以看作圆柱型的空间分布源。当活塞辐射器半径与参量作用区的长度相比小得多时。这种截断参量源模型可以退化到 Berktay的线源端射阵模型(End-Fire Line Array)。数值计算与实验的对比表明,按此模型计算得到的参量源辐射声场,尤其是在近轴附近与实验测量符合较好。

The quality factor of Bulk Acoustic Filters fabricated by micro-machining technology can reach several thousands in RF range,which is better than SAW.Bulk Acoustic Filters,produced by standard integral circuit,with outstanding performance and price advantage,has been used to take the place of conventional RF Filters.The analysis and explanation of one filter centering on 2.4 GHz with bandwith 36 MHz is given,along with the simulation of its impedances and transmission performance by Matlab....

The quality factor of Bulk Acoustic Filters fabricated by micro-machining technology can reach several thousands in RF range,which is better than SAW.Bulk Acoustic Filters,produced by standard integral circuit,with outstanding performance and price advantage,has been used to take the place of conventional RF Filters.The analysis and explanation of one filter centering on 2.4 GHz with bandwith 36 MHz is given,along with the simulation of its impedances and transmission performance by Matlab.

基于微加工技术制造的体声波滤波器品质因子高达数千,其性能已超过表面波滤波器,且可通过标准集成电路技术生产,将其用来替代通信系统中的传统射频滤波器,极具性能和价格优势。因此,该文以T型电路结构为基础,以固有衰减为出发点,推导体声波滤波器的通带和阻带频率特性。并以中心频率2.4 GHz、带宽36 MHz的体声波滤波器为例,作了详尽的分析和说明,并用Matlab软件仿真了其阻抗特性和传输特性。

 
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