Question

II. (5 pts). A discrete-time filtering rate, J,-6000 Hz, a downsampler that do cbandwidth shown), andt sfl that downsamples at rate, 5:1, a discrete-time filter with frequen- A converter at rate, J 1200 Hz. "Ideal" means that the mle system, shown below, comprises an A/D converter sampling at converter contains an ideal lowpass er cota and a gain ofV6 . reconstruction filter with a bandwidth or contain a lowpass filter. The input to the system is xr)-cos(2r-750r)+sin(2x-1000r). in] A/D H(o) Ji /2 e spectra x(a), ra), Ζ(a) and Z(Ω) in the graphs provided. Make sure your plots have amplitudes clearly marked. X(@) Y(o) 0 Z(2) π/2 -π/2 0 Z(w) -π/2 π/2 b) Find z(t)

Answer 1

6 oo 6 LA cri teria 6bD Ti 60 G D 0 60010 3371 -ve ts ㆆ.taken beawal ft gevea uo·

co 3rUO 冠 ther s no ealiasin

(8 @onm33n) +acut.ng3าวไ て40): 300D M2-0 3000 12 atter the D/A ton ver s on) 10 w0 33) tos (1a8Tt) z n) 2.S -198П