List of practicals

1. Signal Generation (sinusoidal of any frequency, Complex exponential, rectangular, triangular etc) --Week 2(Dec 22-27, 2008)
2. DTFT of any signal -Week 3( Dec 29, 2008- Jan 3, 2009)
3. DFT of a sequence (write a program in MATLAB for direct computation of DFT)- Week 4 (Jan 5-10, 2009)
4. Circular convolution, Linear COnvolution in time domain and by using DFT.- Week 5 (jan 12-17, 2009)
5. Optional - Write a program for computation of DFT using Decimation in Time FFT algorithm. Independent programs submitted to me would get bonus 5 Marks. Those who write VHDL/Verilog model for 8-pt FFT would get 20 bonus marks.
6. Use the FFT function of MATLAB for analysing real time signals such as audio, speech. Also use the programme of Expt 3 and compare the timing complexity of both (your prgramme of expt 3 and FFT function using Tic/Toc function) - Week 6, Jan 19-24, 2009.
7. Optional - Write a programme for DIF FFT using radix-3 algorithm. (Bonus marks 10)
8. a. Determine the DFT of length 14 sequence using DFT (direct computtaion) and using FFT function with N=16. What is the conclusion ?
b. Represent the transfer function of a discrete time system in MATLAB. Plot the pole -zero plot, obtain the frequency response of the transfer function. Take examples of FIR and IIR systems. ( Week 7-Jan 27-Feb 1, 2009)
9. Study of Magnitude and phase responses of All pass systems, Minimum phase systems, maximum phase systems, zero phase systems, Inverse systems etc. ( Week 8- Feb 2 to 7, 2009)
10. Study of Filter structures (software implementation), use of filter function.
Create a signal containing two frequencies (one in passband, one in stopband of low pass filter. Choose a Low pass filter coefficiemts b and a. Pass the sequence through the filter representated by [b,a] and see the output.
11. Design of FIR filters using windows
12. Design of IIR digital filters (Butterworth, Chebyshev-I)
13. Study of multirate building blocks upsampler, downsampler
14. Data Compression (speech compression using subband coding)


The list will be updated every Friday.