b. What are the desirable properties of window used in the design of FIR filter? (2)

5 ഒ. Design an ideal low pass filter with a frequency response (5)
#५ [९५५] = 1, |1| 55

7
= 0, < jw] > 7

Find the values of h[n] for 1511. Use Fourier series method.
b. Compare the truncation and rounding errors using fixed and floating point (4)
representations.

6 a. Explain the characteristics of limit cycle oscillation with respect to the system (5)
described by the difference equation: y[n] = 0.95 y[n — I] + x[n]. Determine the dead
band. Take number of bits=4, = 0, and x[nl = 0.875,n = 0

= 0, otherwise

b. Briefly explain the finite register length effects in the realization of digital filters. (4)

PART—C (Module V and VI)

7 8. A signal x[n) is given by x[n] = [0,1,2,3,4,5,6,0,1,2,3,4,5,..........]. Obtain the (6)
interpolated signal with a factor of 2 and decimated signal with a factor of 2.
b. Explain the need for time frequency analysis. Also discuss about the time (6) distribution

and frequency distribution.

8 a. Differentiate between STFT and Wigner distribution. (4) b. With a neat block diagram,
explain the architecture of ADSP2181 digital signal (8) processor.

9 a. Write a note on Interfacing of digital systems with different sampling rates.

b. Briefly explain the addressing modes of TMS 320F240 digital signal processor. (8)