查询词典 filter factor

The design of low pass FIR filter applying in electric system by using both window function and chebyshev approximation methods in MATLAB software were introduced,and the conclusion was gotten that the filter design based chebyshev approximation methods was best.

1概述在数字滤波器家族中，FIR滤波器与IIR滤波器相比，由于具有严格的线性相位和因果稳定性等一系列优点，因而得到了广泛应用。

The project will develop a bandpass sigma-delta analog-to-digital converter for digital audio broadcasting system in three years. In the first year, we had finished the system simulation for IF receiver using conventional high speed ADC and bandpass sigma-delta ADC, respectively. We also had done the analysis and design of high-order bandpass sigma-delta modulator structure. In this year, we have developed a coefficient synthesis method for high order bandpass sigma-delta modulator using high order filter transfer functions (inverse Chebyshev bandreject filter function).

本计划将在三年内发展一个能应用在数位音讯广播系统的带通sigma-delta类比/数位转换器(analog-to-digital converter，ADC)，在第一年度中我们分别以传统高速类比/数位转换器及带通SD类比/数位转换器的接收系统为例，并结合编码正交多工器(Coded Orthogonal Frequency Division Multiplex，COFDM)的技术，建立一套DAB系统模拟的方法，同时并研究有关高阶带通SD类比/数位调变器的架构及电路，并已成功开发出一个由高阶滤波器合成的高阶带通调变器。

This paper presents a method of synthesizi ng non-equiripple low-pass filter based on iteration analysis,in which the rat ional fraction formed of Chebyshev polynomial is used as the filter characterist ic function.

提出一种用切比雪夫多项式构成有理分式作为滤波器的特征函数，并利用迭代分析进行非等波纹低通滤波器综合的方法。

First of all, the original current flows through the choke coil, because there is a coil-storage properties, which can filter out some of the initial high-frequency noise, and then further into the filter capacitors to clean up, even out (the peak shape into pola square wave).

原始电流首先流经扼流线圈，因为线圈有一个蓄能的特性，它可以初步过滤掉一些高频杂波，然后进入电容组进一步过滤、净化、拉平。

This filter is ideal for high performance applications where spectral isolation, flattop filter function and low chromatic dispersion are required.

此滤波器适用于频谱隔离，平顶过滤功能和需要低色散的高性能应用中。

We give a group of circular filter functions, use genetic algorithm to select the frequency bands of larger divisibility value and to estimate the parameters of circular filter functions, and design the expression of chromosome and the function of fitness.

给出了一组圆形滤波函数，并使用遗传算法来选择可分性较大的频段和进行圆形滤波函数的参数估计，设计了染色体的表示方式和适应度函数。

Filters A and B ensure that no rinse waters go to drain giving a closed system. Filter A neutralises and removes surfactants from tanks 2 and 4 through a two stage carbon filter.

A，B过滤系统通过密闭系统保证水不流失。A系统通过双阶炭过滤中和且除去第2和第4个槽桶中溶有的表面活性成分。

A blue filter. He then projected each of the three positives, with the three images superimposed, onto a white screen with each image projected through the same filter he had used in making the transparency. Maxwell was lucky in his demonstration; years later it was pointed out that the collodion process

片，用绿、红、蓝光来穿透幻灯片，之后再将这三种颜色重叠并投射在一张白色的萤幕上，在明确度方面使用相同方式在每张投影片上，马克斯韦尔在他的示范上是幸运作成功，但是几年之后，这种方式被修正，因为阴电性对红光是迟钝的但是对苏格兰格子呢的红色部分是敏感的。

This thesis is subjected to the color filter and discusses how to repair color filter defect.

本研究以彩色滤光片为对象，探讨如何修补彩色滤光片缺陷。

In Excel 12, we have gone beyond the ability to filter on values in cells. We now also support the ability to filter by colour color.

在excel12中，我们能做的已超出了对单元格中数值的筛选，现在我们还能通过给单元格涂颜色进行筛选。

They have quite a lot of work to do.

他们有许多工作要做。

Let us give you a more elaborate example of this process.

让我们给你这个过程的更多的详细例子。