Determine the order and system transfer functions of discrete Butterworth filter that satisfies following criteria: Passband cutoff frequency w, Stopband cutoff frequency ws Passband ripple -3dB < |H(el®)[< 0dB, Stopband attenuation H(el") > x dB,

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use URN= 7 

Determine the order and system transfer functions of discrete Butterworth filter that
satisfies following criteria:
Passband cutoff frequency w,
Stopband cutoff frequency ws
Passband ripple -3dB < |H(el")I< OdB,
Stopband attenuation H(el") > x dB,
lwl < wp
For the values of w,p, W, and x, use the values given in the following table, based on
the second rightmost digit of your student number (URN):
Second rightmost
digit of student
number (URN)
Wp
0.15 n
0.31 n
17.5
16.5
1
0.16 n
0.32 n
0.17 n
0.18 n
0.33 n
14
0.34 n
15
4
0.19 n
0.35
0.41 n
16
5
0.155 n
22
6.
0.165 n
0.42 n
22
7
0.175 n
0.43 n
23
8.
0.185 n
0.44 n
20
9.
0.195 n
0.45 n
21
Example: if your student number (URN) is “6789012" the second rightmost digit is “1",
so you will use: wp = 0.16 7, w, = 0.32 , x = 16.5.
Note:
The following table illustrates normalised factorised denominator polynomials
for different orders n of Butterworth filters.
Factors of Polynomial
(s + 1)
(s? + 1.4142s +1)
(s+ 1) (s² + s + 1)
(s2 + 0.7654s + 1)(s? + 1.8478s + 1)
1
4
al
Transcribed Image Text:Determine the order and system transfer functions of discrete Butterworth filter that satisfies following criteria: Passband cutoff frequency w, Stopband cutoff frequency ws Passband ripple -3dB < |H(el")I< OdB, Stopband attenuation H(el") > x dB, lwl < wp For the values of w,p, W, and x, use the values given in the following table, based on the second rightmost digit of your student number (URN): Second rightmost digit of student number (URN) Wp 0.15 n 0.31 n 17.5 16.5 1 0.16 n 0.32 n 0.17 n 0.18 n 0.33 n 14 0.34 n 15 4 0.19 n 0.35 0.41 n 16 5 0.155 n 22 6. 0.165 n 0.42 n 22 7 0.175 n 0.43 n 23 8. 0.185 n 0.44 n 20 9. 0.195 n 0.45 n 21 Example: if your student number (URN) is “6789012" the second rightmost digit is “1", so you will use: wp = 0.16 7, w, = 0.32 , x = 16.5. Note: The following table illustrates normalised factorised denominator polynomials for different orders n of Butterworth filters. Factors of Polynomial (s + 1) (s? + 1.4142s +1) (s+ 1) (s² + s + 1) (s2 + 0.7654s + 1)(s? + 1.8478s + 1) 1 4 al
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