12

13

14

15

16

17

b)

a)

b)

a)

a)

b)
a)
b)
a)
b)

00000EE407121902

Determine and draw the parallel form realization of the IIR filter structure

represented by the difference equation
y(n) = -0.1(77 - 1) + 0.72 y(n - 2) + 0.7x(n) - 0.252x(n - 2)
PART C

Answer any two full questions, each carries 10 marks.
Design a digital Butterworth filter satisfying the constraints

0.707 > |1(65)| > 1 01 0 > ‏س‎ > 7
|H(el®)| > 0.2 for 37/ > ம with 1-15 using Bilinear transformation
A digital low pass filter is required to meet the following specifications: Pass
band 2൧00151013, Pass band edge _ frequency:4kHz, Stop band
attenuation240dB, Stop band edge frequency:6kHz and Sampling frequency
:24kHz. Determine the order of a Chebyshev filter to meet the specifications in
the digital implementation using bilinear transformation.
With equations explain how impulse response of an FIR filter is obtained using
frequency sampling method.
Design an FIR high pass filter using hanning window with a cut off frequency
of 1.2 rad/sec and length N=7.
PART D
Answer any two full questions, each carries 10 marks.
Consider the cascaded realisation of the following first order sections.H,(z) =
as 12७०) = — Obtain the product quantisation model of the system

and determine overall output noise power.
Which are the methods used to prevent overflow?

Explain limit cycle oscillations in digital filters.
Explain the IO and Memory instructions in TMS320C24x DSP controller.
Explain the central processing unit of TMS320C24x.

Explain the three basic memory addressing modes used by the TMS320C24x
instruction set.

Page 2of 2

(6)

(10)

(5)

(5)

(10)

(8)

(2)
(5)
(5)
(5)
(5)