November 2010
Intermediate to advanced
288 pages
8h 34m
English
book
Notes on Digital Signal Processing: Practical Recipes for Design, Analysis and Implementation
by C. Britton Rorabaugh
Content preview from Notes on Digital Signal Processing: Practical Recipes for Design, Analysis and Implementation
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Note 41. Chebyshev Filters
Chebyshev filters comprise one of the analog filter families that are commonly used as prototypes for IIR digital filters designed using either the impulse invariance method (Note 50) or the bilinear transformation (Note 51).
Alowpass Chebyshev filter is obtained as an equiripple approximation to the response of an ideal lowpass filter. This approximation yields a filter having a squared magnitude response given by
where
2 = 10r/20 –1
r = passband ripple
Tn(ω) = Chebyshev polynomial of order n
The first eleven Chebyshev ...
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