low frequency filter
英 [ləʊ ˈfriːkwənsi ˈfɪltə(r)]
美 [loʊ ˈfriːkwənsi ˈfɪltər]
网络 低频滤波器
双语例句
- The mask acts as a low frequency spatial filter whose effect is to enhance rendition of fine detail.
掩模就象一个低频空间滤波器，其效果是增强细节的重现。 - Sub-Seafloor Buried Reflectors Imaged by Low Frequency Active Sonar Design of a CMOS Low-IF Active Complex Bandpass Filter
通过低频有源声纳进行海底潜伏反射物成像CMOS低中频有源复数带通滤波器设计 - Also the low frequency glint is regarded as the white noise having passed through a first order filter.
认为低频目标闪烁近似于白噪声通过一阶惯性环节所得到的有色噪声。 - Small size, low weigh and high working frequency are the characteristics of multilayer ceramic microwave filter, and it is now being employed in communication and electric products application.
多层陶瓷微波滤波器是一种基于低温陶瓷共烧技术的新型滤波器，具有小型化、轻便化和高频化特点，在通信、汽车、数字化家电等产品中已得到广泛应用。 - Analyzing the prepositive low frequency filter in electrical collection device by using pspice
用pspice对电力采集装置前置低通滤波器进行分析 - Based on the summary and analysis of the low frequency multiple inverters, the main circuit structure of high frequency inverter and the design of output filter parameters were proposed in Chapter two.
第二章主要针对低频多重化并网逆变器的研究工作进行总结和特点分析。基于该研究基础，提出高频逆变器的主电路结构，并进行输出滤波器参数的设计。 - Linearity low frequency passing filter and the method of neighborhood average have faintness effect on the image.
常用的线性低通滤波器和邻域平均的方法对图像有模糊的负作用； - The solution of this problem is to use the digital quadrature sampling, that is, the direct sampling of low IF ( Intermediate Frequency) bandpass signal and through digital filter to get quadrature signals.
解决的方法是采用数字正交采样法，即对低中频带通信号直接采样并通过数字信号处理的方法来得到正交双路信号。 - Low frequency active filter is desiged to filter distract signals and amplify useful signals. The useful singnals are dealed by computer after they are converted by A/ D converter.
设计了低通有源滤波器以实现对干扰信号的滤除和对有用信号的放大，信号经A/D转换后输入微机，进行数据处理分析。 - The paper introduces a method of baseband remote transmission for digital singal realized by making digital signal amplified by band-pass filter, enhancing power and driving ability by audio power amplifier, and using low frequency component being filtered by the low-pass filter.
介绍了硬件方面采用带通放大器实现对数字信号的放大、通过音频功放提高功率和驱动能力，通过低通滤波技术以及利用音频变压器隔离总线，实现了数字信号的基带远程传输。 - Because the ideal condition which quantization error has a white power spectrum is never valid on the state of multilevel quantization, the intrinsic low frequency characteristic of image is inflected by the processing of error diffusion only dealed with highpass filter ( error blue shift).
在多值量化情况下，因量化误差为白噪声的理想条件无法满足，故实施误差扩散处理时仅单纯地进行高通滤波（误差蓝化）将损害图像固有的低频特性。 - 3n According to the low frequency characteristic of the multipath, put forward a data processing method based on the FIR filter design.
根据GPS多路径低频特性，提出了基于FIR滤波器设计的GPS多路径效应提取方法。 - To overcome the wavelet multiresolution analysis's shortcoming of low resolution in high frequency bands, a modified wavelet multiresolution analysis algorithm and a novel wavelet comb filter ( WCF) based on the modified algorithm were proposed.
为克服小波多分辨率分析在高频段频率分辨率低的缺点，提出一种改进型小波多分辨率分析算法，并在此基础上给出一种新型小波梳状滤波器（WCF）的实现方法。 - It consists of the phase accumulator, ROM, D/ A converter and low frequency band filter.
它由相位累加器、只读存贮器、D／A转换器及低通滤波器组成。 - Utilizing the command functions of the MATLAB signal processing toolbox, let the sampled actual displace signal passes the designed low pass filter, and the simulation results of both time and frequency domains demonstrate that the designed IIR filter has good performance.
运用MATLAB信号处理工具箱的命令函数对实际采样的位移信号进行低通滤波，时域和频域的仿真结果都表明所设计的IIR滤波器具有良好的滤波效果。 - Design and Realization on the Low Frequency Band Pass Filter with Center Frequency Adjustment
中心频率可调节的低频带通滤波器设计与实现 - To remove low frequency interference effectively from signal by lattice IIR notch filter, the problem of sensitivity to coefficient is investigated.
为了有效地消除信号中的低频干扰，本文研究了IIR格型陷波滤波器的系数敏感度问题。 - Simulation results of a low frequency signal mixed with noise processed by the filter show that the fuzzy control filter can enhance signal-to-noise ratio and has less mean-square error than that of fixed filter;
针对一个低频信号混杂不同有色噪声的时间序列的滤波处理算例表明分形模糊控制滤波器能够提高信噪比，相对固定滤波器具有较小的均值误差； - The Active low-pass second order filter is designed with computing method, and a negative feedback was imported between input and amplification output of integrate circuit. The negative feedback made the signal of low frequency to pass the filter to realize low-pass filtering.
采用计算法设计有源低通二阶滤波器，其电路从集成运放输出到同相输入间引入一个负反馈，该反馈使滤波器只允许低频端的信号通过，实现低通滤波。 - Based on the characteristics that variable frequency of runoff is low and variable frequency of precipitation is high, the low-pass filter is designed to separate the two sorts of different information.
针对河流量信息变化频率低，降水量信息变化高频高的特点，设计低通滤波器，实现对两类信息的分离； - The Study of Removing Low Frequency Interference from Signal by IIR Lattice Notch Filter
用IIR格型陷波器消除信号中低频干扰的研究 - The second step is using genetic algorithm to fit the dynamic load which mixed up with weighing signal in low frequency bandwidth, and filter the dynamic load.
第二步采用遗传算法拟合出信号中频率很低，且与有用信号混杂在一起的动态载荷信号，并予以消除。 - The low frequency content of the white noise is cut down by the second filter.
第二次过滤削减白噪声的低频含量。 - Further more, because wavelet transform has a good local property, carrier phase data can be divided into high frequency part and low frequency part by wavelet transform. Improvements also were made on the algorithm basing on Kalman filter and wavelet.
另外，本文根据小波变换具有空间局部性好的特点，利用小波变换把载波相位观测量分解为高频和低频分量并结合Kalman滤波算法，对基于小波与Kalman滤波的周跳检测算法进行了改进。 - After the gain controllable amplifier with low noise, then select frequency by preselected tracking filter again, the interference and noise are eliminated further.
由增益可控的低噪声放大器放大后，再次由数控电调谐跟踪滤波器选频，进一步滤除干扰和噪声。 - Low Noise Amplifier, RF Amplifier, Filter, Mixers, Intermediate Frequency Filter and Automatic Gain Control circuit have been mainly designed in this dissertation.
本文主要设计了低噪声放大器模块、射频前级放大器模块、抗镜像滤波器模块、混频器模块、中频滤波器模块以及自动增益控制电路。 - The approach separates the F0 contour into low frequency component ( LFC) and high frequency component ( HFC) with a high-pass filter, then estimates the phrase-command parameters of the model from LFC and the tone-command parameters from HFC.
该方法首先利用高通滤波器分离出基频曲线中的低频成分和高频成分，再分别从低频成分和高频成分中提取模型的短语命令参数和声调命令参数。 - The multi-modulus RF receiver consists of a low noise RF amplifier, mixer, frequency synthesizer, programmable gain amplifier, low pass filter, standard SPI etc..
多模射频接收芯片具有高度的集成度，集成了射频放大器、混频器、频率合成器、数控增益控制电路、中频滤波器、标准SPI接口等功能模块。 - The experiment results show that this method can remove the low frequency noise more effectively than the wavelet filter. ( 2) To make characteristic in time domain more accurate, Hilbert Transform is used to extract the envelope of heart sound.
与小波滤波相比，该方法能有效地消除心音信号中的低频噪声。（2）为了得到更准确的时域特征，本文利用希尔伯特变换进行包络提取。 - This basic source has both the merit of DDS such as low resolution, easy to realize the frequency modulation and phase modulation, and the narrow-band tracing filter merit of PLL to obtain the low spurious.
这个基本信号源既有DDS的细步进，容易实现数字调频和调相的优点，又能有锁相环良好的窄带跟踪滤波特性相结合的低杂散的优点。