On 6/23/14 10:50 AM, Andrew Simper wrote:
Ok, I'm still stumped here. Can someone please show me a reference to
how the bi-linear transform is created without using trapezoidal
integration?

not that you wanna hear from me, but the usual "derivation" in textbooks goes something like this:


   z  =  e^(sT)

      =  e^(sT/2) / e^(-sT/2)

=approx (1 + sT/2)/(1 - sT/2) (hence the "bilinear" approximation)


solving for s gets


    s  =approx  2/T * (z-1)/(z+1)



--

r b-j                  r...@audioimagination.com

"Imagination is more important than knowledge."



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