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GROUP MEMBERS. ELISHBA KHALID 07-CP-07 TAHIRA SAMEEN 07-CP-31. INFINITE IMPLUSE RESPONSE. Introduction IIR Systems IIR Filters Types of IIR Filters. Block Diagram Uses Of IIR Applications Of IIR Conclusion. PRESENTATION LAYOUT. INTRODUTION.

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GROUP MEMBERS

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  1. GROUP MEMBERS ELISHBA KHALID 07-CP-07 TAHIRA SAMEEN 07-CP-31

  2. INFINITE IMPLUSE RESPONSE

  3. Introduction IIR Systems IIR Filters Types of IIR Filters Block Diagram Uses Of IIR Applications Of IIR Conclusion PRESENTATION LAYOUT

  4. INTRODUTION • Sample of output is the weighted sum of past and current samples of input • Property of signal processing systems

  5. IIR SYSTEM • IIR systems have an infinite impulse response • Opposite to FIR • Consider Time Zero

  6. FILTERS • Filter the Signal • Process Of Compressing System • Electronic Systems

  7. FILTER REPRESENTATION • Difference equation Recursive computation needs y[-1] and y[-2]) • Transfer function

  8. IIR FILTERS • Property of IIR • Types • Fast And Cheap • Poor Bandpass Filtering

  9. TYPES OF IIR FILTERS • Analog • Digital

  10. DIGITAL IIR FILTERS • Infinite Impulse Response (IIR) filter has impulse response of infinite duration, e.g. • implement the IIR filter Z Recursively compute output, given y[-1] and x[k]

  11. Block Diagram

  12. STABILITY • Bounded input x[k] such that | x[k] | B < , then the filter response y[k] is also bounded | y[k] | B <  • IIR filter is stable if and only if its poles lie inside the unit circle

  13. STABILITY RULES • For a signal, poles are inside the unit circle • Unit circle is in the region of convergence. • All FIR filters are stable

  14. MATLAB COMMAND • MATLAB's freqz command displays the frequency responses of IIR filters and FIR filters

  15. USES OF IIR FILTERS • Noise removal Example: bandpass filtering to suppress out-of-band noise • Spectral analysis, synthesis, and compression Examples: calculating power spectra

  16. APPLICATION • Data conversion • Channel equalization • Carrier frequency and phase recovery

  17. REFRENCES • http://www.Wikipideia.com • http://www.google.com • Lectures Of Prof.Brian L.Evains • Signals and System By OOPENHEM

  18. CONCLUSION

  19. THANKS

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