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authorttt2018-12-06 13:42:14 +0530
committerttt2018-12-06 13:42:14 +0530
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code by jitendra and added more test4.sce
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diff --git a/help/en_US/cheb1ord.xml b/help/en_US/cheb1ord.xml
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+++ b/help/en_US/cheb1ord.xml
@@ -20,61 +20,4 @@
<refpurpose>Minimum filter order of a digital Chebyshev type I filter with the desired response characteristics.</refpurpose>
</refnamediv>
-
-<refsynopsisdiv>
- <title>Calling Sequence</title>
- <synopsis>
- n = cheb1ord(Wp, Ws, Rp, Rs)
- [n, Wp] = cheb1ord(Wp, Ws, Rp, Rs)
- </synopsis>
-</refsynopsisdiv>
-
-<refsection>
- <title>Parameters</title>
- <variablelist>
- <varlistentry><term>Wp:</term>
- <listitem><para> scalar or vector of length 2 (passband edge(s)), all elements must be in the range [0,1]</para></listitem></varlistentry>
- <varlistentry><term>Ws:</term>
- <listitem><para> scalar or vector of length 2 (stopband edge(s)), all elements must be in the range [0,1]</para></listitem></varlistentry>
- <varlistentry><term>Rp:</term>
- <listitem><para> passband ripple in dB.</para></listitem></varlistentry>
- <varlistentry><term>Rs:</term>
- <listitem><para> stopband attenuation in dB.</para></listitem></varlistentry>
- <varlistentry><term>n:</term>
- <listitem><para> Minimum filter order satisfying specs.</para></listitem></varlistentry>
- </variablelist>
-</refsection>
-
-<refsection>
- <title>Description</title>
- <para>
-This function computes the minimum filter order of a Chebyshev type I filter with the desired response characteristics. </para>
-<para>Stopband frequency ws and passband frequency wp specify the the filter frequency band edges. </para>
-<para>Frequencies are normalized to the Nyquist frequency in the range [0,1]. </para>
-<para>Rp is measured in decibels and is the allowable passband ripple and Rs is also measured in decibels and is the minimum attenuation in the stop band.</para>
-<para>If ws>wp then the filter is a low pass filter. If wp>ws, then the filter is a high pass filter.</para>
-<para>If wp and ws are vectors of length 2, then the passband interval is defined by wp and the stopband interval is defined by ws. </para>
-<para>If wp is contained within the lower and upper limits of ws, the filter is a band-pass filter. If ws is contained within the lower and upper limits of wp, the filter is a band-stop or band-reject filter.
-</para>
-</refsection>
-
-<refsection>
- <title>Examples</title>
- <programlisting role="example"><![CDATA[
-wp = [0.25 0.3];
-ws = [0.24 0.31];
-Rp = 3;
-Rs = 10;
-[n, wp]=cheb1ord(wp, ws, Rp, Rs)
-
- ]]></programlisting>
-</refsection>
-
-<refsection>
-<title>Modified by :</title>
-<simplelist type="vert">
-<member>Sonu Sharma, RGIT Mumbai (fellow at FOSSEE, IIT Bombay)</member>
- </simplelist>
-</refsection>
-
</refentry>