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  <compounddef id="group__filter__design" kind="group">
    <compoundname>filter_design</compoundname>
    <title>Digital Filter Design</title>
    <innerclass refid="classgr__firdes" prot="public">gr_firdes</innerclass>
      <sectiondef kind="func">
      <memberdef kind="function" id="group__filter__design_1ga46cf4a6243c0610020572566e1a3198b" prot="public" static="no" const="no" explicit="no" inline="no" virt="non-virtual">
        <type><ref refid="classstd_1_1vector" kindref="compound">std::vector</ref>&lt; double &gt;</type>
        <definition>std::vector&lt;double&gt; gr_remez</definition>
        <argsstring>(int order, const std::vector&lt; double &gt; &amp;bands, const std::vector&lt; double &gt; &amp;ampl, const std::vector&lt; double &gt; &amp;error_weight, const std::string filter_type=&quot;bandpass&quot;, int grid_density=16)</argsstring>
        <name>gr_remez</name>
        <param>
          <type>int</type>
          <declname>order</declname>
        </param>
        <param>
          <type>const <ref refid="classstd_1_1vector" kindref="compound">std::vector</ref>&lt; double &gt; &amp;</type>
          <declname>bands</declname>
        </param>
        <param>
          <type>const <ref refid="classstd_1_1vector" kindref="compound">std::vector</ref>&lt; double &gt; &amp;</type>
          <declname>ampl</declname>
        </param>
        <param>
          <type>const <ref refid="classstd_1_1vector" kindref="compound">std::vector</ref>&lt; double &gt; &amp;</type>
          <declname>error_weight</declname>
        </param>
        <param>
          <type>const std::string</type>
          <declname>filter_type</declname>
          <defval>&quot;bandpass&quot;</defval>
        </param>
        <param>
          <type>int</type>
          <declname>grid_density</declname>
          <defval>16</defval>
        </param>
        <exceptions> throw (std::runtime_error)</exceptions>
        <briefdescription>
<para>Parks-McClellan FIR filter design. </para>        </briefdescription>
        <detaileddescription>
<para>Calculates the optimal (in the Chebyshev/minimax sense) FIR filter inpulse reponse given a set of band edges, the desired reponse on those bands, and the weight given to the error in those bands.</para><para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>order</parametername>
</parameternamelist>
<parameterdescription>
<para>filter order (number of taps in the returned filter - 1) </para></parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>bands</parametername>
</parameternamelist>
<parameterdescription>
<para>frequency at the band edges [ b1 e1 b2 e2 b3 e3 ...] </para></parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>ampl</parametername>
</parameternamelist>
<parameterdescription>
<para>desired amplitude at the band edges [ a(b1) a(e1) a(b2) a(e2) ...] </para></parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>error_weight</parametername>
</parameternamelist>
<parameterdescription>
<para>weighting applied to each band (usually 1) </para></parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>filter_type</parametername>
</parameternamelist>
<parameterdescription>
<para>one of &quot;bandpass&quot;, &quot;hilbert&quot; or &quot;differentiator&quot; </para></parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>grid_density</parametername>
</parameternamelist>
<parameterdescription>
<para>determines how accurately the filter will be constructed. \ The minimum value is 16; higher values are slower to compute.</para></parameterdescription>
</parameteritem>
</parameterlist>
Frequency is in the range [0, 1], with 1 being the Nyquist frequency (Fs/2)</para><para><simplesect kind="return"><para>vector of computed taps</para></simplesect>
<parameterlist kind="exception"><parameteritem>
<parameternamelist>
<parametername>std::runtime_error</parametername>
</parameternamelist>
<parameterdescription>
<para>if args are invalid or calculation fails to converge. </para></parameterdescription>
</parameteritem>
</parameterlist>
</para>        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="/builddir/build/BUILD/gnuradio-3.2.2/gnuradio-core/src/lib/general/gr_remez.h" line="61"/>
      </memberdef>
      </sectiondef>
    <briefdescription>
    </briefdescription>
    <detaileddescription>
    </detaileddescription>
  </compounddef>
</doxygen>