一、引言随着计算机及集成电路技术的迅速发展,自60年代起出现一门新的学科——数字信号处理技术。它与陈旧的模拟信号处理技术不同,它是以数字运算的方法对信号实施时域或频域的处理。(?)优点是处理精度高,稳定性高,特性一致性强,易于适应不断改变的要求,功能可以程序优,硬件易于大规模集成化,以及复用化等。它不仅能完成以往模拟处理方式所完成的全部功能,且能实现以往所不能实现的功能。因此,这一技术近年来非常引人注 I. INTRODUCTION With the rapid development of computer and integrated circuit technology, a new discipline has emerged since the 1960s - digital signal processing technology. It is different from the old analog signal processing technology, which is the digital operation of the signal in the time domain or frequency domain processing. (?) Advantages of high precision, high stability, strong consistency of features, easy to adapt to changing requirements, the function can be excellent, the hardware is easy to large-scale integration, and reuse and so on. It can not only complete all the functions completed by the previous analog processing, but also realize the functions that can not be achieved in the past. Therefore, this technology is very attractive in recent years