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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．
Subband coding is one way to achieve high-definition television band compression. In subband coding, quadrature mirror filters (QMF) are often used to eliminate the aliasing of each subband spectrum. This paper presents a window function QMF optimization design method, and gives two specific QMF design examples.