Q176
If the variance _x^2 of d(n) = x(n) - x(n - 1) is one-tenth the variance _x^2 of a stationary zero-mean discrete-time signal x(n), then the normalized autocorrelation function R_xx ( K ) _x^2 at K = 1 is
If the variance of d(n) = x(n) - x(n - 1) is one-tenth the variance of a stationary zero-mean discrete-time signal x(n), then the normalized autocorrelation function at K = 1 is
A.
0.95
AnswerB.
0.90
C.
0.10
D.
0.05
Answer: Option A
Solution
Answer: Option A
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