SRM University 2007 B.Tech Electronics and Communications Engineering BANK : EC303 – DIGITAL SIGNAL PROCESSING - Question Paper
Wednesday, 30 January 2013 06:50Web
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Ha(Sn) = one / (Sn2 +1.414 Sn +1)
14) The specification of the desired LPF is 0.8 < | H(w)| < 1.0; 0 < w <0.2?
|H(w)|< 0.2 ; 0.32 < w<0.32?
Design a) Butter worth digital filter using impulse invariant transformation
b) Chebyshev digital filter using bilinear transformation
15) The specification of the desires LPF is
1/ 2 < H(w) <1.0 ; 0
Design a Butterworth digital filter using Bilinear transformation.
16) The specification of the desired LP digital filter is
0.9 < H(w) <1.0 ; 0
Design a chebyshev digital filter using Impulse Invariant transformation.
17) In the IIR filter provided beneath the products are rounded to 4-biots (including sign bit)
H(z) = one /{(1-0.35 Z -1) (1-0.62 Z -1)}
obtain the output round off noise power in a i) Direct form I ii) Cascade form
18) For 2nd order IIR filter H(z) = one / (1-0.5Z-1) (1-0.45Z-1)
List the effect of shift in pole location with 3-bit coefficient representation in Direct & cascade form.
19) In an IIR system provided beneath the products are rounded to 4-bits (including sign bit)
H(z) = one / (1-0.35Z-1) (1-0.45Z-1)
obtain the output round-off noise power in a) Direct form-I b) cascade form
Unit- III
PART-A
1. What is Multirate digital signal processing?
2. Write the various applications of Multirate DSP
3. What are the various areas in which Multirate DSP is used
4. Give the advantages of Multirate DSP
5. Define Decimation
6. Define Interpolation
7. What is the need for sampling rate conversion
8. Obtain the decimated signal y(n) by a factor 3 from the input signal
y(n) = x(Mn) where M=3
9. Obtain the 2 fold expanded signal y(n) of the input signal x(n)
x(n) = { n ,n>0
0, otherwise
y(n) = { x(n/M) ,n=multiples of M
0 otherwise where M=2
10. What is the need for Multirate signal processing
11. provide a few examples of Multirate Digital system
12. Write the input output relationship for a decimation processing a factor
of 5
13. With an example discuss the sampling process
| Earning: Approval pending. |
