21EC5252-DSP-Unit 3-FIR filter design

Which of the following statements is true regarding the impulse response of a symmetric FIR filter?

• It is real and even
• It is real and odd
• It is complex and even
• It is complex and odd

Which of the following is true about window design for FIR filter

• Windows provided flexibility in design

• The ripples in both passband and stop band are almost completely removed

• More computational efforts required to obtain filter coefficients

• Window functions not readily available in closed form expressions

Which of the following defines the rectangular window function of length M-1?

• w(n)= 1, n=0,1,2…M-1 ;; =0, else where
• w(n)= 1, n=0,1,2…M-1 ;; = -1, else where
• w(n)= 0, n=0,1,2…M-1 ;; =1, else where
• None of the mentioned

A high pass filter is

• a filter with a bell shaped curve around the filters' active frequency

• a filter with a constant level after reaching the filters active frequency

• a filter that cuts the high frequency component of a signal

• a filter that cuts the low frequency component of a signal

FIR filter have ………., IIR filter have………

• Zeros, Poles & Zeros
• Poles & Zeros, Zeros
• Zeros, Zeros
• Poles , Poles

A filter is said to be linear phase filter if the phase delay and group delay are _______

• High
• Moderate
• Low
• Constant

A ________ filter rejects all frequencies within a specified band and passes all those outside this band.

• Low pass
• High pass
• Band pass
• Band stop

FIR filters ________ (1. are non-recursive 2. do not adopt any feedback 3. are recursive 4. use feedback)

• 1 & 2
• 3 & 4
• 1 & 4
• 2 & 3

In the frequency sampling method for FIR filter design, we specify the desired frequency response Hd(?) at a set of equally spaced frequencies

• true
• false

Which of the following is introduced in the frequency sampling realization of the FIR filter?

• Poles are more in number on unit circle
• Zeros are more in number on the unit circle
• Poles and zeros at equally spaced points on the unit circle
• None of the mentioned