Comparison of Discrete approximations for a 3rd order Butterworth Response.
The applet compares the magnitude and phase response of the
Bilinear, Matched Z, Impulse Invariant and Step Invariant
approximations for a 3rd order Butterworth response.
The numerical values of the gain and phase at any frequency
can be seen by changing wL.
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COPYRIGHT © 2007 Cuthbert Nyack.