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        <name>mmse_interp_differentiator_ff</name>
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        <argsstring>(mmse_interp_differentiator_ff &amp;&amp;)=default</argsstring>
        <name>mmse_interp_differentiator_ff</name>
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        <param>
          <type>mmse_interp_differentiator_ff &amp;&amp;</type>
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        <location file="gr-filter/include/gnuradio/filter/mmse_interp_differentiator_ff.h" line="40" column="5"/>
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        <definition>unsigned gr::filter::mmse_interp_differentiator_ff::ntaps</definition>
        <argsstring>() const</argsstring>
        <name>ntaps</name>
        <qualifiedname>gr::filter::mmse_interp_differentiator_ff::ntaps</qualifiedname>
        <briefdescription>
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        <type>unsigned</type>
        <definition>unsigned gr::filter::mmse_interp_differentiator_ff::nsteps</definition>
        <argsstring>() const</argsstring>
        <name>nsteps</name>
        <qualifiedname>gr::filter::mmse_interp_differentiator_ff::nsteps</qualifiedname>
        <briefdescription>
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      <memberdef kind="function" id="classgr_1_1filter_1_1mmse__interp__differentiator__ff_1a3e196e752097cae4b31755f041bdbd1a" prot="public" static="no" const="yes" explicit="no" inline="no" virt="non-virtual">
        <type>float</type>
        <definition>float gr::filter::mmse_interp_differentiator_ff::differentiate</definition>
        <argsstring>(const float input[], float mu) const</argsstring>
        <name>differentiate</name>
        <qualifiedname>gr::filter::mmse_interp_differentiator_ff::differentiate</qualifiedname>
        <param>
          <type>const float</type>
          <declname>input</declname>
          <array>[]</array>
        </param>
        <param>
          <type>float</type>
          <declname>mu</declname>
        </param>
        <briefdescription>
<para>compute a single interpolated differentiated output value. </para>
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<para><computeroutput>input</computeroutput> must have <ref refid="classgr_1_1filter_1_1mmse__interp__differentiator__ff_1a795eccc2a658b39b57ff1e2fc463620e" kindref="member">ntaps()</ref> valid entries. input[0] .. input[<ref refid="classgr_1_1filter_1_1mmse__interp__differentiator__ff_1a795eccc2a658b39b57ff1e2fc463620e" kindref="member">ntaps()</ref> - 1] are referenced to compute the output value.</para>
<para><computeroutput>mu</computeroutput> must be in the range [0, 1] and specifies the fractional delay.</para>
<para><parameterlist kind="exception"><parameteritem>
<parameternamelist>
<parametername>std::runtime_error</parametername>
</parameternamelist>
<parameterdescription>
<para>if mu is not in the range [0, 1].</para>
</parameterdescription>
</parameteritem>
</parameterlist>
<simplesect kind="return"><para>the interpolated differentiated output value. </para>
</simplesect>
</para>
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        </inbodydescription>
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    <briefdescription>
<para>Compute intermediate samples of the derivative of a signal between signal samples x(k*Ts). </para>
    </briefdescription>
    <detaileddescription>
<para>This implements a Minimum Mean Squared Error interpolating differentiator with 8 taps. It is suitable for signals where the derivative of a signal has a bandwidth of interest in the range (-Fs/4, Fs/4), where Fs is the samples rate.</para>
<para>Although mu, the fractional delay, is specified as a float, in the range [0.0, 1.0], it is actually quantized. That is, mu is quantized in the differentiate method to 128th&apos;s of a sample. </para>
    </detaileddescription>
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