Question

Please answer in as much detail as possible. Thank you.

Question 5 Check each statement that is true and leave blank each statement that is false. The impulse response of an ideal lowpass filter is unrealizable because it is non-causal due to its infinite length in negative time. Practical filters can be designed by truncating the ideal impulse response to a finite length and applying a window to taper the discontinuities at the impulse response truncation points An Mth order FIR filter designed with a rectangular window has a wider transition region than one designed with a tapered window such as Hamming. Designing a practical FIR filter with a tapered window reduces passband ripple and increases stopband attenuation relative to a rectangular window (no taper) All FIRs have nonlinear phase responses.

Answer 1

1 ) False

Impulse response of Ideal Low Pass Filter is realisable since ,

Low pass filter allows low frequency and Frequency is only positive .

Hence , Impulse response is possible .

2)

True

We design Practically the filters by getting thee impulse response and since it is not that the Outpput suddenly become high or low it need a tamper .

3)

False

Because for Mth order We get the M+1 samples but size of sample is same as normal

4)

True

5)

false

All FIR filter do not have Nonlinea phase responnse

Infact Linear Phase response is property of filter