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Uniform Filter Bank

by

Iman (view profile)

 

12 Feb 2012 (Updated )

This function can be used to design a uniform filter bank with M subbands.

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Description

This function can be used to design a uniform filter bank (with M analysis and M synthesis filters) so that the perfect reconstruction is almost achieved. The method is based on the optimization technique proposed in [1].

M= Number of subbands
m= A positive integer

[analysis_filters,synthesis_filters] are analysis and synthesis filters'
coefficients of the designed filter bank (each row is devoted to one filter). The
length of all filters is 2*(m*M). The amplitude response of the analysis filters will be shown at the end.

Example:
[analysis_filters,synthesis_filters]=PR_Nguyen(5,4)

Reference:
[1] T.Q. Nguyen, “Near-Perfect-Reconstruction Pseudo-QMF Banks”, IEEE
Transactions on Signal Processing, Vol. 42, No.1, 1994.

To find other Matlab functions about filter design, please visit
http://www.ece.uvic.ca/~imanmoaz/index_files/index1.htm

Required Products Filter Design Toolbox
Optimization Toolbox
Signal Processing Toolbox
Symbolic Math Toolbox
MATLAB
MATLAB release MATLAB 7.2 (R2006a)
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Comments and Ratings (1)
24 Jul 2013 ebrahim

ebrahim (view profile)

i couldn't run it! it seems to be crashed!

Updates
11 Oct 2012 1.4

some changes in comments

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