Question: What is the output from the second stage lattice filter when two single stage lattice filers are cascaded with an input of x(n)?

Options

A : K1K2x(n-1)+K2x(n-2)

B : x(n)+K1x(n-1)

C : x(n)+K1K2x(n-1)+K2x(n-2)

D : x(n)+K1(1+K2)x(n-1)+K2x(n-2)

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