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author | Brijeshcr | 2017-11-30 18:27:20 +0530 |
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committer | Brijeshcr | 2017-11-30 18:27:20 +0530 |
commit | c257cd7a7e766fb89332cca4fb367904767362ed (patch) | |
tree | 8f455c21cddfd7856cb53c9436319b2c68e4ab50 /help/en_US/qp_kaiser.xml | |
parent | cc5c7ee42c6cb2ab94dd0e0f6985778657ab47f5 (diff) | |
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Help files and functions
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-rw-r--r-- | help/en_US/qp_kaiser.xml | 64 |
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diff --git a/help/en_US/qp_kaiser.xml b/help/en_US/qp_kaiser.xml new file mode 100644 index 0000000..005f11a --- /dev/null +++ b/help/en_US/qp_kaiser.xml @@ -0,0 +1,64 @@ +<?xml version="1.0" encoding="UTF-8"?> + +<!-- + * + * This help file was generated from qp_kaiser.sci using help_from_sci(). + * + --> + +<refentry version="5.0-subset Scilab" xml:id="qp_kaiser" xml:lang="en" + xmlns="http://docbook.org/ns/docbook" + xmlns:xlink="http://www.w3.org/1999/xlink" + xmlns:svg="http://www.w3.org/2000/svg" + xmlns:ns3="http://www.w3.org/1999/xhtml" + xmlns:mml="http://www.w3.org/1998/Math/MathML" + xmlns:scilab="http://www.scilab.org" + xmlns:db="http://docbook.org/ns/docbook"> + + <refnamediv> + <refname>qp_kaiser</refname> + <refpurpose>Computes a finite impulse response (FIR) filter for use with a quasi-perfect reconstruction polyphase-network filter bank.</refpurpose> + </refnamediv> + + +<refsynopsisdiv> + <title>Calling Sequence</title> + <synopsis> + qp_kaiser (nb, at, linear) + qp_kaiser (nb, at) + </synopsis> +</refsynopsisdiv> + +<refsection> + <title>Parameters</title> + <variablelist> + <varlistentry><term>nb:</term> + <listitem><para> Number of bands</para></listitem></varlistentry> + <varlistentry><term>at:</term> + <listitem><para> Attenuation</para></listitem></varlistentry> + <varlistentry><term>linear:</term> + <listitem><para> When not zero, minimum-phase calculation is omitted.</para></listitem></varlistentry> + </variablelist> +</refsection> + +<refsection> + <title>Description</title> + <para> +This is an Octave function. +This version utilizes a Kaiser window to shape the frequency response of the designed filter. Tha number nb of bands and the desired attenuation at in the stop-band are given as parameters. + </para> + <para> +The Kaiser window is multiplied by the ideal impulse response h(n)=a.sinc(a.n) and converted to its minimum-phase version by means of a Hilbert transform. +</para> +</refsection> + +<refsection> + <title>Examples</title> + <programlisting role="example"><![CDATA[ +qp_kaiser (5, 5, 1) +ans = + +0.11591 0.25606 0.25606 0.25606 0.11591 + ]]></programlisting> +</refsection> +</refentry> |