Outline

In this appendix, we will look at a variety of ways to digitize macroscopic point-to-point transfer functions $\Gamma (s)$ corresponding to a desired impulse response $\gamma(t)$:

1. Sampling $\gamma(t)$ to get $\gamma(nT), n = 0,1,2,\ldots$
2. Pole mapping ( $z_i = e^{s_i T}$ followed by Prony's method)
3. Frequency-response matching using digital filter design methods
4. Modal analysis