摘要
子带编码是实现高清晰度电视频带压缩的一种方法．子带编码中，常采用正交镜像滤波器（ＱＭＦ）消除各子带谱的混叠．本文提出一种用窗函数进行ＱＭＦ优化设计方法，并给出两个具体ＱＭＦ设计例子．
Sub-band coding is a means to accomplish bandwidth compression of HDTV signals. Quadrature mirror filters (QMF) are often used in sub-band coding to eliminate aliasing between sub-bands. This paper presents principles of two-band integer-band nonrecursive QMF,proposes a QMF optimization method based on windows design, and gives two QMF design examples.
出处
《天津大学学报》
EI
CAS
CSCD
1995年第1期101-106,共6页
Journal of Tianjin University(Science and Technology)
基金
国家教委博士点基金
