查询词典 convolution theorem

Operation of discrete convolution and discrete correlation will spend too much time to process a signal in time.

时域离散卷积和相关运算一般耗时太长，对信号进行处理的实时性较差。

The physical meaning of convolution to explain very clearly, it is easy to understand, for there is no signal and the system studied students, is a very good information.

详细说明：卷积的物理意义，解释的很清楚，很容易理解，对于没有学过信号与系统的学生来说，是一份很不错的资料。

The characteristic function of the probability density function of response variable is obtained by the high efficient multidimensional numerical integration method or convolution integral based on response surface method. Then the discrete probability density function of response variable is calculated using the fast Fourier inverse transform technique, at last the cumulative distribution function of the response variable can be quantitatively determined.

首先利用高效多维数值积分方法或基于响应面法的卷积积分求解功能函数的分布函数的特征函数，也就是进行Fourier正变换；然后利用快速Fourier逆变换数值求解功能函数的概率密度函数，进而求得失效概率。

According to the algorithm idea of edge detection of gray scale images,with the aid of differential operator and through convolution,two algorithmsof segmentingcolor images are put forward.

主要根据灰度图像的边缘检测算法思想，借助空域微分算子，通过卷积提出了基于边缘的两种彩色图像分割算法。

Line Integral Convolution method is a powerful technique for representing directional information in vector field visualization.

矢量场可视化是科学计算可视化中的一个研究热点，基于纹理图像的流线积分算法可以清楚地描述矢量场的细节。

In response to signals and system simulation studies, MATLAB also demonstrated its strong role, with MATLAB simulation for the time signal convolution, discrete, continuous LIT system of time-domain analysis, synthesis and periodic signal of decomposition, the bi-frequency system Domain analysis, signal modulation and demodulation, discrete systems, the Z-domain analysis.

在信号与系统仿真响应的研究中，MATLAB也体现其强大的作用，用MATLAB仿真连续时间信号的卷积计算，离散、连续LIT系统的时域分析、周期信号的合成与分解、系统的复频域分析、信号的调制与解调，还有离散系统的Z域分析。

The course is divided into two parts: Part 1: Signal representations - discrete and continuous; System representations; Linear time invariant systems (Superposition, Causality, Impulse response, Stability, Transfer functions); Discrete and continuous convolution.

通过 本课程的学习，学生应能掌握信号分析与线性系统的基本理论及分析方法，应能建立简单电路与系统的数学模型，并对数学模型求解，为后续课程的学习打好基础。

This paper introduces the common solutions to convolution integral of discrete causal series and further proposes a simpli solution using the knowledge of elementary mathematics.

本文介绍了在离散因果序列卷积和的求解中的常用解法，在此基础上应用初等数学的知识介绍了一种简便解法。

Compared with time-domain interference excision techniques, transform-domain techniques have espial merits such as the convolution operation in time-domain can be realized in transformdomain by multiplication operation.

相对时域抗干扰技术而言，变换域抗干扰技术具有独特的优点，如在时域中的卷积运算在变换域中可以用简单的相乘来实现。

In using the FDTD method to research the transient process of the overhead line, for the convenience of the time domain convolution, the Vector Fitting method is adopted to expend the frequency domain form of ground return impedance into a sum of finite exponential functions which are easy to be treated and test to be valid.

提出了应用矢量匹配法逼近传输线频变阻抗的时域处理方法，从而解决了时域有限差分法难以处理频变问题的困难。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。