code by jitendra and added more test4.sce

1 files changed, 1 insertions, 57 deletions

diff --git a/help/en_US/buttord.xml b/help/en_US/buttord.xml
index 32b7f21..4e314b0 100644
--- a/help/en_US/buttord.xml
+++ b/help/en_US/buttord.xml
@@ -17,63 +17,7 @@
 
   <refnamediv>
     <refname>buttord</refname>
-    <refpurpose>Minimum filter order and 3dB cutoff frequency of a digital Butterworth filter with the desired response characteristics. </refpurpose>
+    <refpurpose>Minimum filter order and 3dB cutoff frequency of a digital Butterworth filter with the desired response characteristics</refpurpose>
   </refnamediv>
 
-
-<refsynopsisdiv>
-   <title>Calling Sequence</title>
-   <synopsis>
-   n = buttord(Wp, Ws, Rp, Rs)
-   [n, Wc] = buttord(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)), 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)), 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>
-   <varlistentry><term>Wc:</term>
-      <listitem><para> 3dB cutoff frequency/frequencies.</para></listitem></varlistentry>
-   </variablelist>
-</refsection>
-
-<refsection>
-   <title>Description</title>
-   <para>
-This function computes the minimum filter order of a Butterworth filter with the desired response characteristics. </para>
-<para>The filter frequency band edges are specified by the passband frequency wp and stopband frequency ws.</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 in decibels and is the minimum attenuation in the stop band.</para>
-<para>If ws>wp, the filter is a low pass filter. If wp>ws, 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 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 = 40/500 ;
-    Ws = 150/500 ;
-    [n, Wc] = buttord(Wp, Ws, 3, 60)
-   ]]></programlisting>
-</refsection>
-
-<refsection>
-<title>Modified by :</title>
-<simplelist type="vert">
-<member>Sonu Sharma, RGIT Mumbai (fellow at FOSSEE, IIT Bombay)</member>
-    </simplelist>
-</refsection>
-
 </refentry>