E7F16 (D)
How might the sampling rate of an existing digital signal be adjusted by a factor of 3/4?
A. Change the gain by a factor of 3/4
B. Multiply each sample value by a factor of 3/4
C. Add 3 to each input value and subtract 4 from each output value
D. Interpolate by a factor of three, then decimate by a factor of four
