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alias filter
相关语句
  混滤波器
     Development of an anti alias filter based on MAX293
     基于MAX293的抗混滤波器研制
短句来源
     Development of an Anti Alias Filter Based on Switched Capacitor IC
     基于开关电容IC的抗混滤波器研制
短句来源
     The action and demand of the anti alias filter in the system arerecounted. After analyzing the 8-order low pass elliptic switched capacitor filter (MAX293), the antialias filter is developed based on it.
     叙述了其中的抗混滤波器的作用与要求,并在分析8阶低通椭圆开关电容滤波器(MAX293)性能的基础上,研制了基于MAX293的抗混滤波器
短句来源
     Specifically, the antialias filter based on a 8thorder low pas elliptic switched capacitor filter is recounted in detail. The programmable control amplifier and 4way A/D consisting of new high performance devices, and their work principles and characteristics are described.
     尤其详细叙述了采用8阶低通椭圆开关电容滤波器制作的抗混滤波器,对采用高性能新器件组成的程控放大器及4路A/D的工作原理和特点作了叙述。
短句来源
     The action and demand of the anti alias filter in the system are recounted. After analyzing the switched capacitor IC-MAX290series filters,the anti alias filter is developed based on MAX293EPA. Espesially,the“resonance”phenomenon is analyzed theoretically and the analysis is proved by the experiment.
     叙述了其中的抗混滤波器的作用与要求,在分析开关电容IC-MAX290系列滤波器性能的基础上,研制了基于MAX293的抗混滤波器,尤其对遇到的"共振"现象作出了理论分析及实验证实,并予以解决。
短句来源
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  “alias filter”译为未确定词的双语例句
     High fidelity alias filter
     高保真度去假频滤波器
短句来源
     The system consists of eight A/D channels and one D/A channel with resolution of 12 bits having a programmable 7—order elliptic anti—alias filter.
     该系统具有8个A/D通道和一个D/A通道,分辨率为12bit,带有一个可编程的7阶椭圆抗混叠滤波器。
短句来源
     Experiment shows that when damping coefficient and positive feedback capacity are properly chosen and theoretical amplitude-frequency curve is basically in conformity with actual one, the alias filter can provide high fidelity of transmitted seismic signal.
     实验表明,阻尼系数和正反馈电容选择合适,理论计算的幅频特性曲线和实测的幅频特性曲线基本一致,可以实现去假频滤波器对传输地震信号的高保真。
短句来源
     Data capture and down sample subsystem realizes the sampling of ocean bottom magnetotelluric signal at different sample frequency according to user input parameter, and realizes real time anti alias filter and down sample based on user input sample frequency when user set frequency is lower than the lowest sample frequency of hardware of instrument.
     数据采集与抽样根据用户输入参数控制海底大地电磁信号的采集 ,当用户设置的采样频率低于仪器硬件的最低采样频率时 ,根据用户设置的采样频率对采集的数据进行实时抗混叠滤波和抽样 ;
短句来源
     It has been applied for the design of an anti alias filter in analog front end of video decoder IC with 15MHz signal frequency already.
     这一结构已经应用于 1 5MHz信号频率视频解码芯片模拟前端的抗混叠滤波器设计中
短句来源
  相似匹配句对
     High fidelity alias filter
     高保真度去假频滤波器
短句来源
     On the Filter
     关于共轭滤波器
短句来源
     The study on anti-alias filter in data acquisition system
     数据采集系统中去假频滤波器的研究
短句来源
     LIGHTNING FILTER
     雷电滤波器
短句来源
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  alias filter
Archimedan Prüfer Structures Alias Filter Archimedean d-Semigroups
      
The next block is a third order anti-alias filter constructed in a similar fashion to the TX reconstruction filter.
      
The high oversampling ratio greatly simplifies the design of the analog input anti-alias filter.
      
The end result is a minimal requirement for the anti-alias filter on the front end.
      
The anti-alias filter in a conventional baseband system is a lowpass filter.
      
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The quantitative relationship between filtering parameters and amplitude-frequency and phase shift characteristics is analysed theoretically in this paper. The amplitude value of amplitude-frequency curve in frequency passband is related to damping coefficient. In damping band, the steepness of the amplitude-frequency curve depends on filtering stage. Phase shift curve varies within 0°-180°, and phase shift value decreases with the increase of damping coefficient. Experiment shows that when damping coefficient...

The quantitative relationship between filtering parameters and amplitude-frequency and phase shift characteristics is analysed theoretically in this paper. The amplitude value of amplitude-frequency curve in frequency passband is related to damping coefficient. In damping band, the steepness of the amplitude-frequency curve depends on filtering stage. Phase shift curve varies within 0°-180°, and phase shift value decreases with the increase of damping coefficient. Experiment shows that when damping coefficient and positive feedback capacity are properly chosen and theoretical amplitude-frequency curve is basically in conformity with actual one, the alias filter can provide high fidelity of transmitted seismic signal.

本文从理论上分析了滤波参数与幅频特性和相移特性的定量关系。在通频带内,幅频特性曲线的幅值的大小与阻尼系数有关。在阻带区,幅频特性曲线陡度的大小取决于滤波器的级数。滤波器的相移特性曲线均在0°—180°范围内变化,随着阻尼系数的增大,相移值反而减小。实验表明,阻尼系数和正反馈电容选择合适,理论计算的幅频特性曲线和实测的幅频特性曲线基本一致,可以实现去假频滤波器对传输地震信号的高保真。

The twin-T networks of anti-alias filter in DFS-V seismograph are analyzed in this paper. It is pointed out that the twin-T networks of anti-alias filter in DFS-Ⅴ are different from the standard balanced ones. And the advantage of the former's design has been described.

本文通过对DFS—V数字地震仪低通滤波器中的双T网络进行分析指出这种网络不同于普通对称的双T网络及这种网络的设计优点。

One of the major parts of the digital seismograph is the antialias filter,the cut--off frequency of which is fixable for both domestic and oversea'sequipments now. It is a disadvantage to receive the reflecting signals fromthe deep interface of the stratum. A new type of anti-alias filter was perfectly designed, the cut-off frequency of which goes lower as the depthincreases. So it may be able to increase the seismic resolving power to the deepinterface.

去假频滤波器是数字地震仪的重要部件之一,目前国内外仪器的去假频滤波器的截止频率是不变的。这对接收深层地震反射波是不利的。文中比较完善地设计了一种新型去假频滤波器,它的截止频率可随深度的加深而变小。可以提高深层地层分辨率。

 
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