Linear subband predictive filters for wideband signals

Authors:
Yan Wu
Affiliations:
Department of Mathematical Sciences, Georgia Southern University, Statesboro, GA
Venue:
CSECS'06 Proceedings of the 5th WSEAS International Conference on Circuits, Systems, Electronics, Control & Signal Processing
Year:
2006

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Abstract

In this paper we present the design of multiband linear subband prediction (LSP) filters for wideband signals. A wideband signal is divided into narrowband subband signals via an array of lowpass/bandpass filters. A linear prediction filter is designed for each subband channel, which has its own designated frequency interval. The filter coefficients are fixed throughout the coding process. A closed form bound on the error of prediction shows that the LSP approach is accurate for wideband signals, which is further supported by simulations.