Digital Signal Processing

  Short question and answers in Digital Signal Processing:

   1.Discrete-time signals and linear systems

1. What is linear time invariant system 
2. State sampling theorem  
3. What do you understand by the terms "Signal and Signal processing ? 
4. What is a Deterministic signal ? With Example ? 
5. What is random signal ? 
6. Define Periodic signal and Non-periodic signal. 
7. Define symmetric and antisymmetric signals.
8. Define Analog Signal
9. Define Discrete-time signal.
10. Define Digital signal.
11. What are the different types of signal representation ?
12. Define System.
13. Define Discrete-time system.
14. What are the classification of discrete-time systems ?
15. What are the different types of operations performed on discrete-time signals ?
16. What is aliasing effect ?
17. What are the two basic differences between the Fourier transforms of a discrete-time signal and the Fourier transform of a continuous time signal ?
18. What are the properties of Fourier spectrum of a discrete-time aperiodic sequence ?
19. Define Dynamic system
20. Define static system
21. Define linear system with example.
22. What is a causal system ?
23. What is the property of shift-invariant system ? or What is a time-invariant system ? or What is a shift-invariant system ? with example.

    2. The Z-Transform

1. What is meant by Region of convergence or ROC ?
2. What is commutative and distributive properties of convolution ?
3. What are the properties of Region of convergence ?

   3.The Fast Fourier Transform

1. What are the applications of FFT algorithm ?

   4.Infinite Impulse Response Filters

1. Compare bilinear transformation and Impulse invariant method of IIR filter design

   5.Digital Signal Processors

1. What is pipelining ?
2. Give the special features of DSP processors