Equiripple Design of QMF Banks Using Digital Allpass Networks
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概要
- 論文の詳細を見る
In this paper, we discuss design of quadrature mirror filter (QMF) banks using digital allpass networks in the frequency domain. In the QMF banks composed of a parallel connection of two allpass networks, both aliasing error and amplitude distortion are always completely canceled. Therefore, we only need to design the analysis filters and eliminate phase distortion of the overall transfer function. We consider design of the QMF banks in two cases where phase responses of the filters are required or not required. In the case where the phase responses are not required, the design problem can be reduced to design of phase difference of two allpass networks. In the case where the phase responses are required, we present a procedure for designing the QMF banks with both equiripple magnitude and phase responses.
- 社団法人電子情報通信学会の論文
- 1995-08-25
著者
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Zhang Xi
Department Of Communications And Systems University Of Electro-communications
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IWAKURA Hiroshi
Department of Communications and Systems, University of Electro-Communications
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Zhang Xi
Department Of Chemistry Division Of Material Sciences Graduate School Of Natural Science And Technol
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Iwakura Hiroshi
Department Of Communications And Systems University Of Electro-communications
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