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前言 据最近的资料介绍,目前,美国的专用实时应用计算机,就所用资金计算,占美国计算机的10％;到八十年代末,预计将增长到30％。即专用实时应用在今后十年内将增长六倍,是很值得注意的动向。 在专用实时应用中,数字讯号处理是一个十分重要的方面。其中,一种基于线性系统的迭加原理构成的卷积滤波器,得到了广泛的应用。它由输入讯号的离散取样序列X(nT)跟滤波器h(mT)直接进行卷积,得到输出序列y(nT),即:
According to recent information, at present, the United States’ dedicated dedicated real-time application computers account for 10% of the U.S. computer capitalization, and by the end of the 1980s it is expected to increase to 30%. That is, dedicated real-time applications will increase by six times in the next ten years, which is a very noteworthy trend. In dedicated real-time applications, digital signal processing is a very important aspect. Among them, a convolution filter based on the superposition principle of linear system has been widely used. It is directly by the input signal discrete sampling sequence X (nT) with the filter h (mT) directly convolution, the output sequence y (nT), namely: