The simulation result shows that the dynamic response and the detection precision in detection circuit can be greatly influenced by the cut-off frequency, order and type of low pass filter.
结果表明，低通滤波器的截止频率、阶数和类型对检测电路的动态响应过程、检测精度都有很大影响。
By using MATLAB signal and using window method, frequency sampling and Chebyshev approximation the design of low pass digital filter in the toolbox have been processed.
采用窗函数法、频率抽样法和切比雪夫最佳一致逼近法，通过调用Matlab信号处理工具箱中的函数设计低通数字滤波器。
Removing high frequency noise pulses by a low-pass filter and Schmitt-trigger.
用一低通滤波器和施密特触发器排除高频噪声脉冲。
This paper describes the design and realization of the azimuth preprocess in the real-time imaging processor of SAR with programmable logic device by the method of sub-aperture using band-pass filter.
该文讨论了在合成孔径雷达实时成像处理器中，采用子孔径带通滤波成像处理方法的方位预处理的设计，构造了一种用大规模可编程逻辑器件实现方位预处理的电路结构。
The toroidal core was excited by sharp pulse current. The sensor circuit is composed of peak value detector, Butterworth low-pass filter and differential amplifier.
磁芯采用高频脉冲电流励磁，信号处理电路由峰值检波、低通滤波及差动电路构成。
By providing a low pass filter smooth flanks are realized.
通过提供低通滤波器实现了平滑侧面。
The multi-parallel- magnification circuits and the band-pass filter can well restrain random interfering noise, especially generated by test run vibration.
适配电路中的多级并联放大电路、带通滤波器对试车过程中的随机干扰信号，尤其是振动引起的噪声具有很强的抑制作用。
A repetitive controller can be obtained by designing a zero phase shift low pass filter. With the help of digital signal processing and software tools, it is easy to design a satisfactory controller.
该方法将控制器的设计转化为零相移低通数字滤波器的设计问题，借助于数字信号处理的理论和工具直接得到所需的控制器参数。
The DC drift and initial problems of pure integrator were overcome, and the magnitude and the phase error of one-order low pass filter eliminated by using a novel integration method.
利用改进的磁通积分算法，克服了纯积分器直流漂移和初始值问题，消除了一阶低通滤波器的幅值和相位偏差。
It is considered by analysis that the fault plane reflection relies on the mechanical attributes of infilling materials and is characteristics of band pass filter when infilling materials are fluids.
经分析认为，断层面反射依赖于充填介质的力学属性。在流体充填时，断层面对透过波表现为带通滤波特性。
Suitable for blocking, by-pass and coupling of DC and signals to VHF range. Widely used in filter, noise suppression and low pulse Circuits.
适用于直流和VHF级信号的隔直流、旁路、祸合以及滤波、降噪、低脉冲电路。
Based on the design fundamental of digital LDI ladder filter, a digital LDD ladder high-pass filter is designed by using the frequency transformation in this paper.
本文利用数字梯形滤波器的设计原理，以离散微分器作为积木块，利用频率变换方法，设计出数字LDD梯形高通滤波器。
Multirate filter bands can be realized by cosine modulation of a linear-phase low-pass prototype filter.
多采样率滤波器组可以通过对线性相位低通原型滤波器进行余弦调制来实现。
This kind of beamformer can eliminate incoherent noise when signals pass Wiener filter, then achieve a better speech-enhance effect by linear constraints minimum variance beamforming.
该波束形成器首先让信号经过维纳滤波器消除非相干噪声，而后经过经典的线性约束最小方差处理，最终达到较好的语音增强效果。
By theoretical analysis, numerical simulation and experiment research, the Interleaver based on optical all-pass filter technique is investigated.
对基于光全通滤波技术的奇偶交错滤波器进行了理论分析、数值模拟和实验研究工作。
By applying frequency analysis method to a standard active band-pass filter circuit, a formula to calculate characteristic frequencies is offered.
根据标准有源带通滤波器原理，采用频域分析法，可得出有源带通滤波器的特征频率计算公式。
In practical OFDM systems, virtual subcarriers are usually used to avoid the transmitted data being distorted by the low-pass filter on the transmitter side.
实际的OFDM系统通常会使用虚拟子载波，以此来避免发送信号受到发送端成形低通滤波器的影响。
In the structured system, signals are proceeded by low-pass filter, Fourier Trans form, range analyzing and expert system based on Neural Network.
运用数字滤波、傅立叶变换，以及幅值分析和基于神经网络的专家系统等方法对信号进行监测和诊断。
Furthermore, the effect of Combinatorial Nonperiodic Defected Ground structure (CNPDGS) on the characteristic of the low-pass filter formed by the CNPDGS structure is studied.
分析了在原有的低通滤波器的基础上加入了非周期缺陷接地结构后对滤波特性的影响。
Meanwhile, by polyphase factorization, it was proved that the low-pass filter satisfies perfect reconstruction condition.
同时借助多相位分解，证明了多通道低通滤波器满足完全重构条件。
This PFC was realized by employing sliding-mode variable-structure inner current loop control and outer voltage loop PI control with digital low-pass filter to achieve high performance.
提出了采用滑模变结构电流内环与由PI调节器和数字低通滤波器组成的电压外环相结合的控制系统，以实现高性能高速度的功率因数校正。
The results show that a series of band pass filter applied in WDM and DWDM were made by the change of inserted phase-number and apodising functions.
分析表明：可以通过改变光栅的相移点数、选择不同的变迹函数，研制用于WDM和DWDM的滤波器。
After the sequence passes through digital-to-analog converter and low pass filter, the desired frequency sweep signal is synthesized by the method of direct digital synthesis.
该序列通过数-模转换器和低通滤波器后，产生出频率扫描信号。
Suitable for blocking, by-pass and coupling of DC and VHFsignals. Widely used in filter and low-pulse circuits.
适用于直流和VHF级信号的隔直流，旁路和耦合，广泛用于滤波、低脉冲电路。
The mathematical model for rotating speed and hydraulic character of by-pass centrifugal oil filter was deduced.
建立了分流离心式滤清器转速特性和液力特性的数学模型。
The high pass and low pass and ellipse-filter are realized by the medium of the MAX264 s programming.
然后利用单片机对MAX264编程，实现低通、高通及椭圆滤波器。
This paper analyses the characteristics of noise and presents the mernod of promoting S/N by inserting a band-pass pre-filter, which can reduce the Pe in data communication under small signal.
通过对噪声特性的分析，提出了用前置带通滤波器来提高信噪比的方法，改善微弱信号时数据通信的效果。
A method of implementing adaptive enhancement of variance on an image by a recursive low-pass filter is introduced mainly in this paper.
介绍了用递归低通滤波器方法来实现图象的方差自适应增强。
A method of implementing adaptive enhancement of variance on an image by a recursive low-pass filter is introduced mainly in this paper.
介绍了用递归低通滤波器方法来实现图象的方差自适应增强。
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