B.TECH - Semester 4 digital signal processing Question Paper 2022 (dec)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- $X[n]=[1,-1,2,3,0,0]$ and $X[K]$ is its 6 paint DFT, Given that $\left.Y[K]=W_{3}{ }^{2 K} X \mid K\right]$ Withoul compuling IDFT, Delemine the time domain sequence $y[n]$. 2 Write down the computational easiness in finding out 8 point DFT of a sequ...
- Slate convolulion properly of DFT.
- What do you mean by a linear phase filler? Write down the condition for a filter to be linear phase.
- Compare the features of FIR and IIR filters. 6 Wrile down the expression for Bilinear Transformation from analog to digital domain. 7 What do you undersland by finite word length effects in filters?
- Iflustrate direct form realization of an FIR filter. Assume a suitable transfer function.
- Illustrate decimation in mulli rate signal processing.
- Draw a set up to change the original sampling rate of a system by a factor of 0,75. $$ \text { ( } 10 \times 2=20 \text { Marks) } $$ PTO. Answer one full questions from each Module, Each question carries 20 marks.
- (a) Compule 4 poinl DFT of the sequence $x[n]=(1,1,1,1)$. 10
- (b) Compute the 4 point DFT of the sequence $(1,0,0,0)$ and from this find the DFT of the sequence (0,0,2,0) OR
- Find 8 point DFT of the sequence $(1,1,1,1,0,0,0,0)$ using FFT melhod. Module-II
- The desired frequency response of a low pass filter is given by $H_{\alpha}\left(e^{j \omega}\right)=e^{i \beta \alpha}:|\alpha| \leq \frac{3 \pi}{4}=0 ; \frac{3 \pi}{4}<|\alpha| \leq \pi$. Use hamming window. Design an FIR filler. OR
- Design a digital IIR filler that gives an equivalent low pass analog filter with 3.01 dB allenualion al 500 Hz and 15 dB attenuation at 750 Hz . The filter is having monolonic pass band and slop band. Take sampling rate as 2000 samplessisecond. Use b...
- (a) Implement cascade realization of $H(z)=1+\frac{5}{2} z^{-1}+2 z^{-2}+2 z^{-3}$.
- (b) Oblain parallel realizalion of the filler with transfer funclion $$ h(z)=\frac{8 z^{3}-4 z^{2}+11 z-2}{\left(z-\frac{1}{4}\right)\left(z^{2}-z+\frac{1}{2}\right)} $$ 10 OR 2
- Implement the filler in lattice form whose inpul-oulpul relation is represented by the difference equalion $y(n)+\frac{3}{4} y(n-1)+\frac{1}{4} y(n-2)=x(n)+2 x(n-1)$.
- Wrile noles on (a) sub band coding (b) trans multiplexers. OR
- Explain the architecture of TMS320C6713 processor 20 ( $4 \times 20=60$ Marks) M-6t04 湢真