The CVSD scheme is described in Section 18.5. Assume that the current value of x(k)

is 1000, the current value of xn1k - 12 is 990, and the current value of δ(k - 1) is 30.

a. Assume that the last 4 output bits are the same. Calculate the next value of xn1k - 12.

b. Repeat part

(a) when the last 4 outputs are not the same.