Digital signal processing
Previous year question paper with solutions for Digital signal processing
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- What is autocorrelation and cross correlation?
- Give the properties of linear time-invariant discrete time system.
- Give the relation between Z-transform and discrete fourier transform (DFT).
- What do you mean by ‘Twiddle factor’ of DFT & show how it is cyclic?
- What are the advantages of bilinear transformation method for the design of IIR filter?
- What are the three quantization errors due to finite word length registers in digital filters?
- What are the advantages of representing a digital filter in the block diagram form?
- What do you mean by symmetric and anti symmetric FIR filters?
- Write the desirable features of DSP processors.
- Describe the relationship between z-transform and Discrete-time fourier transform with the help as mathematical equations.
- Differentiate fixed point representation and floating point representation of coefficients of a filter
- Differentiate FIR and IIR filters. What are parameters on which the choice of FIR or IIR is made during the design of a digital filter?
- Briefly describe the characteristics as ADSP processors.
- Explain limit cycles in filters.
- Give the two properties of ROC.
- How the stability of the linear time variant system is calculated?
- What is the time shifting property of DFT?
- With the help of an example discuss the effect of rounding errors.
- What is the use of convolution of two sequences? Give one example.
- Compare the computational efficiency of FFT algorithms over the direct computation of DFT.
- What is correlation?
- What is the role Barrel shifter in ADSP-21xx?
- Give the advantages of digital filters over analog filters?
- How can you differentiate energy and power signals?
- Give the difference between cross-correlation & auto-correlation.
- Give the two properties of ROC.
- State the time shifting property of Z-transform.
- Give the difference between linear and circular convolution.
- What do you mean by ‘twiddle factor’ of DFT & show how it is cyclic?
- In the implementation of a digital system what are the effects of quantization of coefficients?
- Give the various steps involved in the design of FIR filter.