Which of the following spectrograms shows the chirp signal

after low pass filtering?

Which of the pole-zero plots A-H shows an FIR low pass filter?

FIR

filters in Direct Form 2 transposed are well-suited for parallel implementation

on hardware.

Only

FIR filters can be true linear-phase filters.

The

transfer function of FIR filters has all poles located at the origin

The

transfer function of FIR filters has no poles.

Linear-filters

require pairs of zeros in the pole-zero plot, which have the same distance to

the unit circle.

Find the

correct 8-point DFT magnitude spectrum of the time-domain signal

Let the input to a 4-point FFT be . Give the value at node A in the butterfly graph above.

Let a 4-point

DFT of a

Give the missing value of the DFT spectrum