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Efficient implementation of Koilpillai-Vaidyanathan pseudo quadrature mirror filter (PQMF) banks

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3 Author(s)
Xiang Wei ; Dept. of Electr. & Electron. Eng., Univ. of Central Lancashire, Preston, UK ; Shaw, M.J. ; Varley, M.R.

An efficient implementation algorithm for the Koilpillai-Vaidyanathan (see ibid., vol.41, no.1, p.82-92, 1993) pseudo quadrature mirror filter (KVPQMF) bank, which is useful in audio compression schemes, is presented. The implementation employs a polyphase system with discrete cosine transforms (DCTs). Theoretical and practical results show a typical saving in computational load of 82% over the direct implementation

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Signal Processing, IEEE Transactions on  (Volume:44 ,  Issue: 12 )