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General synthesis procedures for FIR lossless transfer matrices, for perfect-reconstruction multirate filter bank applications

机译:FIR无损传递矩阵的通用合成程序,用于完美重建的多速率滤波器组应用

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摘要

A recently reported procedure (see ibid., vol.ASSP-35, p.476-492, Apr. 1987 and Proc. IEEE Int. Conf. Acoust., Speech, Sig Processing, Apr. 1987, p.2169-2172) for the design of M-channel perfect-reconstruction quadrature mirror filter (QMF) bands uses the concept of lossless alias-component matrices. The synthesis of such QMF banks centers around the generation of a lossless M×M finite-impulse response (FIR) transfer matrix E(z). Recent results for such generation have been somewhat ad hoc, i.e. not sufficiently general. A general procedure is outlined for the generation of such transfer matrices. The procedure is based on a cascaded-lattice structure, derived from a state-space viewpoint. The structure is such that it generates only M×M lossless FIR transfer matrices (regardless of parameter values), and conversely, any M×M lossless FIR transfer matrix can be obtained by a suitable choice of parameters. These parameters turn out to be angles thetak, and the structure is such that the number of angles is minimal. A design example is presented to demonstrate the main results
机译:最近报道的一种方法(参见同上,ASSP-35,p.476-492,1987年4月和Proc.IEEE国际会议音译,Sig Processing,1987年4月,p.2169-2172)在设计M通道完美重构正交镜像滤波器(QMF)频段时,使用了无损别名分量矩阵的概念。这种QMF库的合成围绕无损M×M有限脉冲响应(FIR)传递矩阵E(z)的生成。这种产生的最新结果在某种程度上是临时的,即不够充分。概述了用于生成这种传递矩阵的一般过程。该过程基于从状态空间视点派生的级联晶格结构。这种结构使得它仅生成M×M个无损FIR传递矩阵(与参数值无关),相反,可以通过适当选择参数来获得任何M×M个无损FIR传递矩阵。这些参数证明是角度thetak,并且结构使得角度的数量最小。给出了一个设计实例来演示主要结果

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