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2D linear phase approximation

Similar to the line-interpolating PWD, the 2D phase shift operator $ Z_1^{p_1}Z_2^{p_2}$ can be approximated by the following 2D allpass system:

$\displaystyle H_2(Z_1,Z_2)= \frac{F(1/Z_1,1/Z_2)}{F(Z_1,Z_2)},$ (6)

where

$\displaystyle F(Z_1,Z_2)= \sum_{k_1=-N}^N\sum_{k_2=-N}^N f_{k_1k_2}Z_1^{-k_1}Z_2^{-k_2}.$ (7)



Subsections


2013-08-09