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5) for a digital FIR LPF with specifications H(w) = 1dB 0sw<0.37 H(w) = - 10 dB 0.6nSwSA 1. Design the filter 2. Draw the filter realization using direct form

5) for a digital FIR LPF with specifications H(w) = 1dB 0sw<0.37 H(w) = - 10 dB 0.6nSwSA 1. Design the filter 2. Draw the filter realization using direct form

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Q5) for a digital FIR LPF with specifications H(w) = 1dB 0sw<0.3n H(w) = - 10 dB 0.6A <w<A 1. Design the filter 2. Draw the filter realization using direct form
Transcribed Image Text:Q5) for a digital FIR LPF with specifications H(w) = 1dB 0sw<0.3n H(w) = - 10 dB 0.6A <w<A 1. Design the filter 2. Draw the filter realization using direct form
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Step 1

FIR filters depends only on present and past inputs. It does not depends on past outputs, hence there is no feedback in FIR filters. Impulse response of FIR filters are finite duration hence the name finite impulse response filters.

Main advantage of FIR filters over IIR filters is exact linear phase design is possible. There are three common methods to design FIR filters,

1. Window method or Fourier series method

2. Frequency sampling method

3. Optimal filter design methods

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