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<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
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<!DOCTYPE MAN SYSTEM "../../manrev.dtd">
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<LANGUAGE>eng</LANGUAGE>
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<TYPE>Scilab Function</TYPE>
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<DATE>April 1993</DATE>
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<SHORT_DESCRIPTION name="zpell"> lowpass elliptic filter</SHORT_DESCRIPTION>
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<CALLING_SEQUENCE_ITEM>[zeros,poles,gain]=zpell(epsilon,A,omegac,omegar) </CALLING_SEQUENCE_ITEM>
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<PARAM_NAME>epsilon</PARAM_NAME>
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<SP>: real : ripple of filter in pass band (<VERB>0<epsilon<1</VERB>)</SP>
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<PARAM_NAME>A</PARAM_NAME>
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<SP>: real : attenuation of filter in stop band (<VERB>A>1</VERB>)</SP>
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<PARAM_NAME>omegac</PARAM_NAME>
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<SP>: real : pass band cut-off frequency in Hertz</SP>
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<PARAM_NAME>omegar</PARAM_NAME>
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<SP>: real : stop band cut-off frequency in Hertz</SP>
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<PARAM_NAME>zeros</PARAM_NAME>
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<SP>: resulting zeros of filter</SP>
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<PARAM_NAME>poles</PARAM_NAME>
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<SP>: resulting poles of filter</SP>
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<PARAM_NAME>gain</PARAM_NAME>
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<SP>: resulting gain of filter</SP>
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Poles and zeros of prototype lowpass elliptic filter.
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<VERB>gain</VERB> is the gain of the filter</P>
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<AUTHOR>F.D. </AUTHOR>