本文介绍了一种基于实时处理的数字信号处理算法。该算法首先将长序列分成一个个较短序列，然后通过循环卷积求线性卷积，并且对最后的循环卷积作了有效改进，使数字滤波器处理过程实时、快速。关键词：数字信号处理；数字滤波器；线性卷积；循环卷积；实时。Abstract: This essay introduces a computerization of Digital signal Processing based on real time processing. Firstly, it divides a long sequence into several shorter ones, then ,gets a linear convolution result by cyclic convolution ,and makes an effective improvement of the final cyclic convolution ，therefore ，makes Processing of Digital Filter real time ,and quick .Keywords: Digital Signal Processing System, Digital Filter , Linear Convolution, Cyclic Convolution, Real Time.
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