Title :
General method for perfect reconstruction subband processing of finite length signals using linear extensions
Author :
Silva, Vitor ; De Sa, Luis
Author_Institution :
Inst. de Telecomunicaoes, Pola II da Univ. de Coimbra, Portugal
fDate :
9/1/1999 12:00:00 AM
Abstract :
A general approach to the nonexpansive M band decomposition of finite length signals is presented. The technique is based on linear signal extensions and can be applied to all types of linear- and nonlinear phase M-band perfect-reconstruction filter banks. The signal expansion is described by a linear transformation on the input signal, and the extended subband samples can be easily found using simple matrix computations
Keywords :
channel bank filters; filtering theory; linear phase filters; matrix algebra; nonlinear filters; signal reconstruction; signal sampling; extended subband samples; finite length signals; general method; input signal; linear phase M-band filter banks; linear signal extensions; linear transformation; matrix computations; nonexpansive M band decomposition; nonlinear phase M-band filter banks; perfect reconstruction subband processing; perfect-reconstruction filter banks; signal expansion; Convolution; Filter bank; Image coding; Image reconstruction; Nonlinear filters; Signal analysis; Signal processing; Signal resolution; Signal synthesis; Switches;
Journal_Title :
Signal Processing, IEEE Transactions on
