Amrita Vishwa Vidyapeetham 2009 B.Tech Electronics and Communications Engineering Digital Signal Processing 3rd internal - Question Paper
Amrita Vishwa Vidyapeetham
Amrita School of Engineering, Amritapuri
Missed Periodical Examination, April 2009
EE 322 Digital Signal Processing
S4 ECE
Time: 2 hours Maximum Marks: 50 (Answer all the questions)
1. What is Dead-band? Calculate the deadband of the
(4 Marks)
2. State the difference between Butterworth and Chebyshev approximations.
(4 Marks)
3. Find the order of Kaiser Window used to design a low-pass filter with cutoff frequency , stop band ripple and transition bandwidth not 1arger than 0.117 Hz.
(4 Marks)
4. The system function of a first order normalized low pass filter is given as .Obtain the system function of bandpass filter having pass band from 1 kHz to 2 kHz.
(4 Marks)
5. Briefly explain the effects of finite word-length in digital filters.
(4 Marks)
6. Consider the pole zero plot shown in fig below.
i. Find out the location of zeros if the above diagram symbolizes a linear phase FIR filter.
ii. Find the Transfer function of the filter.
(8 Marks)
7. Design a 5 tap Hilbert transformer with the characteristic as shown: Use Rectangular window.
(10 marks)
8. Design a digital Butterworth filter satisfying the constraints
with T= 1 sec using
(a) Bilinear Transformation
(b) Impulse invariant method.
(12 Marks)
Earning: Approval pending. |