EE451 Fall 2008______________________________________________________________________________EE 451 – HW610.5===evennnhoddnnnhnhHTHTHT0][/2][][πThe plot of the frequency response of the truncated Hilbert Transformer10.17 A Hanning window gives the smallest length.The plot of the magnitude response of the bandstop FIR filter 10.21 (a) ∑==−+=−MknrkknkwAkDnr00][)2sin(][πφ(b)][][][][][][][][][][][DnsnsnrDnsnrnsDnrDnsnrnsny−−=−−−+=−−−−+=EE451 Fall 2008______________________________________________________________________________Hence y[n] does not contain any harmonics disturbances10.38≤≤≤≤≤≤=πππwwwwW82.057.055.0144.0043.1)(M10.7 The solution yields: a0=5.5, a1=-7.0, a2=-0.2, ε=10.0. It turns out to be the maximum error at thespecific points [x1, …,x4].The plot of the error is shown below 10.25 Using firpmord and firpm programs we find that an appropriate filter length is