Uniform Filter Bank
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)
https://www.youtube.com/watch?v=pMLnq_7mjFc&feature=youtu.be
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
Citation pour cette source
Iman (2024). Uniform Filter Bank (https://www.mathworks.com/matlabcentral/fileexchange/35053-uniform-filter-bank), MATLAB Central File Exchange. Récupéré le .
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Version | Publié le | Notes de version | |
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1.4.0.0 | some changes in comments
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