4

Question 1

When the input is a/an ___________,
the system output is equal to the _______________.

Answer 1

impulse signal δ(n) ,
impulse response h(n)

Question 2

digital filter facts
(system, filter and method)

Answer 2

classified as LTI system, FIR and IIR filters
Windowing method is commonly used in designing

Question 3

Roll off improves with (shorter/longer)
filter length,
(depends/ not depends) on cutoff frequency.

Answer 3

longer,
does not depend

Question 4

transition width

Answer 4

0 Hz

Question 5

passband attenuation

Answer 5

0 dB

Question 6

stopband attenuation

Answer 6

∞

Question 7

least popular window

Answer 7

rectangle

Question 8

Transition width functions (band type and attenuation)

Answer 8

Stopband and Passband edge frequency
-3dB attenuation

Question 9

frequency specification is defined at the -3dB point

Answer 9

critical frequency
passband edge frequency

Question 10

FIR filter responses and feedback

Answer 10

Finite impulse response, filter response given by impulse response, Has no feedback

Question 11

purpose of windowing in digital filter design

Answer 11

to reduce memory space

Question 12

HPF

Answer 12

stp
stopband - transition band - passband

Question 13

BPF

Answer 13

sps
stopband - passband - stopband

Question 14

BSF

Answer 14

psp
passband - stopband -passband

Question 15

LPF

Answer 15

pts
passband - transition band - stopband