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Topic: zero phase digital filtering
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lady firmament

Posts: 14
Registered: 10/17/12
zero phase digital filtering
Posted: Dec 12, 2012 8:56 PM
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Hi
Dear all.
I wanna know about zero phase digital filtering.
y=filtfilt(b,a,x)
what does it means b and a. how can i choose its parameter.
what is numerator and denominator coefficients b and a respectively?
And i chose a=1 and b=1 but the system didn't work.
Please kindly



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