利用插值法提高采样率的滤波器设计  

Design of Heightening Sampling Rate for Filter by Interpolation

作　　者：徐燕[1] 孙丽华[1] 

机构地区：[1]南昌大学信息工程学院,江西南昌330031

出　　处：《现代电子技术》2008年第19期69-71,共3页Modern Electronics Technique

摘　　要：随着数字信号的迅速发展,在现代数字系统中对超过单一采样率的处理已经越来越普遍,这直接导致了多采样率处理作为数字信号处理(DSP)中一个新的分支领域的出现。其中在进行D/A(数字/模拟)转换的场合,往往需要提高数字信号采样率来降低对模拟滤波器的要求。论述利用插值的方法来提高采样速率,介绍了内插原理和给出了一种多相滤波器的设计方法,使性能和资源占有率得到较大的突破,最大限度地减少资源消耗。With the rapid development of digital signal, multirate process has become more and more common in the modern digital system,which lead directly to the multi - sampling rate processing as a new branch of the emergence in the field of i Digital Signal Processing （DSP）. When implementing D/A （digital/analog） conversion , the sampling rate of digital signal is often needed to be increased to reducing the requirement of analog filter. In order to improve sampling rate by using interpolation,the theory of interpolation are introduced, the poly - phase filter design is given. This means may reduce consumed resource to a bare minimum based on improving the performance of filter and the usage of resource remarkably.

关 键 词：内插 多速率采样 多相滤波器 数字信号处理 

分 类 号：TN713.7[电子电信—电路与系统]