Determine the bandwidth required to recover the signals. Q4. If the input sinusoidal frequency of the system shown is varied between zero Hz and 12KHz, a. Sketch the output frequencies versus input frequencies. b. Sketch the phase of output frequencies versus input frequencies. (Assume the low pass filter add zero phase) Determine the bandwidth required to recover the signals. Q4. If the input sinusoidal frequency of the system shown is varied between zero Hz and 12KHz, a. Sketch the output frequencies versus input frequencies. b. Sketch the phase of output frequencies versus input frequencies. (Assume the low pass filter add zero phase)