Filters

Problem designing a specific FIR filter

Problem designing a specific FIR filter
  1. What are the requirements for designing a FIR filter?
  2. What are the undesirable features of FIR filters?

What are the requirements for designing a FIR filter?

(i) A desired or ideal response is chosen, usually in the frequency domain. (ii) An allowed class of filters is chosen (e.g. the length N for a FIR filters). (iii) A measure of the quality of approximation is chosen. (iv) A method or algorithm is selected to find the best filter transfer function.

What are the undesirable features of FIR filters?

Quantization Noise can be made negligible in FIR filters. Due to this sharp cutoff FIR filters can be easily designed. 4. Disadvantage of FIR filters is that they need higher ordered for similar magnitude response of IIR filters.

Carrier Obtain carrier frequency of signal from its absolute magnitude
Obtain carrier frequency of signal from its absolute magnitude
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Aliasing Aliasing and square waves
Aliasing and square waves
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Filter Examine the operation of a filter, given its z-transform
Examine the operation of a filter, given its z-transform
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