९)

2)

b)

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2)

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00000EC301121901

Let Hy(w) = 2८7३०; 0 > |w| > =)
7
= 015 > ८ >> 7

Get the filter coefficients for FIR filter using frequency sampling. Assume N= 7.

PART ^
Answer any two full questions, each carries 20 marks.

Draw the direct form 1 and direct form 2 structures for the difference equation
y(n) = x(n) + 0.5x(n - 1) + 3y(m — 1) - 2y(n— 2).

Draw the block diagram of TMS320C67xx and briefly explain function of all
blocks.

Explain the effects of coefficient quantization in FIR and IIR filters.

Derive the variance of quantization noise in ADC. Assume step size is A.

Let x(n) = 0.5"u(n). Obtain the signals for decimation by 3, interpolation
by 3.

Find the lattice structure implementation of the FIR filter with
h(n) = 1,0.5,0.75, -0.6

Write notes on finite word length effects in DSP systems.

Let a signal x(n) = 0.5 "u(n) is decimated by 2. What happens to its spectrum?

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