Causal IIR perfect reconstruction subband coding

A class of perfect reconstruction (PR) subband coding schemes is proposed. It uses a bank of causal stable recursive filters both at the analysis and synthesis ends. A general method of parametrizing all causal stable infinite impulse response (IIR) perfect reconstruction filters is given. A complete description of the entire class of linear phase (unstable) IIR subband coding schemes is provided.<<ETX>>

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