## Poles and Zeros

The transfer function
of a causal LTI system with concentrated elements is a rational function
with real coefficents.
With
the frequency response can be calculated as the amplitude response
and the phase response
:

With
as a pole and
as a zero of the transfer function.
Poles and zeros are always real or complex conjugate.

The Java applet shows the
domain
of a system with two poles and two zeros.
Poles (×) and
zeros (O) can be dragged with the mouse.
The amplitude response and the phase response are shown along side.
`Plot: |H(s)|` may takes a while.

The source code (version 96/09/28) and the GPL.

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[ www.thole.org
| Manfred Thole
]

Manfred Thole,
manfred@thole.org
Last modified: Sat Jan 24 23:47:18 MET 2004