信号卷积在MATLAB中的实现

The Implementation of Signal Convolution in MATLAB

核心的数字信号处理算法是离散傅立叶变换（DFT），是在数字域和频率域对信号的DFT实现离散，通用计算机可以处理离散信号。离散傅里叶变换，在通信、语音处理、图像处理、雷达、医学成像等领域被广泛应用，但这是通过卷积和相关运算和序列的连续信号频谱分析的基础上。体积积分的循环卷积，线性卷积。本论文分析了在什么情况下可以使用循环卷积运算代替线性卷积和MATLAB编制了相应的程序代码来实现这两个任意输入序列的循环卷积，键盘可以输入序列的最终结果和波形显示。

The core digital signal processing algorithm is the Discrete Fottrier Transform （DFT）, is the DFT to the signal in the digital domain and frequency domain are realized discrete,general-purpose computer which can handle discrete signal. Discrete Fourier transform, in communications, voice processing, image processing, radar, medical imaging and other fields is widely used, but this is by convolution and correlation operations on continuous signals and sequences based on spectral analysis. Volume integral for the circular convolution, linear convolution. This paper analyzes under what circumstances can use cyclic convolution operation instead of linear convolution and the corresponding program codes in MATLAB to achieve this on two sequences of arbitrary input cyclic convolution, the keyboard sequence can inout the final results and waveform display.