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2D Filter design

Started by Appalayagari Sreedhar December 16, 2002
Hi everyone,

I am working on the 2D filter design.

I can plot the figure using the command freqz2 but i need to calculate the
stopband attenuation, which is very imortant for my design.

can anyone please tell me how to calculate the stoband attenuation in db values.

any suggestions are warmly welcomed,

sree.