全通多相网络滤波器组的理论和设计
THEORY AND DESIGN OF UNIFORM FILTER BANKS USING ALL-PASS FILTERS
-
摘要: 本文进一步研究了应用全通滤波器实现均匀N带滤波器组的设计理论。我们提出了一种两级全通型滤波器组的结构,第一级为周期性镜像半带滤波器,第二级为两个N/2带的带通滤波器组。第一级的阻带恰好可以抑制第二级的不可控带,实现了全通型多相滤波器的连续阻带持性。并且给出了综合滤波器组的实现方案,可以使整个分析/综合系统完全消除混叠和幅度失真。最后本文给出了一个实例。
-
关键词:
- 全通滤波器; 滤波器组; 正交镜像滤波器
Abstract: The theory of uniform filter banks using all-pass filters is further developed. A filter-bank structure using two-stage all-pass filters is proposed. The pre-stage is half-band filters with period, the post-stage is two pass-band filter banks. The stopband of the pre-ttage filter just controls the don t-care band of the poststage filter using all-pass polyphase, so that a realization of continuous stopband property is obtained Moreover, a method of implementing synthesis filter banks is given, which eliminates aliasing and amplitude distortions of analysis/synthesis system. Finally, an example is listed. -
R. E. Crochiere, L. R. Rabiner, Multirate Digital Signal Processiag, Englewood Cliff, NJ: Prentice-Hall, (1983).[2]M.Vetterli, Signal Processing, 10 (1986) 3, 219-244.[3]P. P. Vaidyanathan, Proc. IEEE, 78 (1990) 1,56-93.[4]M. Vetterli, D. Le Gall, IEEE Trans. on ASSP, ASSP-37(1989) 7, 1057-1071.[5]P. P. Vaidyanathan, IEEE Trans. on CAS, CAS-33 (1986) 11, 1045-1064.[6]T. Q. Nguyen, P. P. Vaidyanathan; IEEE Trans. on ASSP, ASSP-36 (1988) 5,693-705.[7]K. Swatninathan, P. P. Vaidyanathan, IEEE Trans. on CAS, CAS-33 (1986) 12, 1170-1191.[8]P. A. Regalia, S. K. Mitra, P. P. Vaidyanathan, Proc. IEEE, 76(1988) 1,19-37.[9]M. Renfor, T. Saramaki, IEEE Trans. on CAS, CAS-34(1987) 1,24-39.[10]孙少凡,QMF滤波器和16kb/s子带编码的研究,北京邮电学院电信工程系硕士论文,北京,1990年. -
计量
- 文章访问数: 2364
- HTML全文浏览量: 108
- PDF下载量: 574
- 被引次数: 0
下载:
