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<title>GNU Radio 3.3.0 C++ API: gr_freq_xlating_fir_filter_scf.h File Reference</title>
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<h1>gr_freq_xlating_fir_filter_scf.h File Reference</h1><code>#include <<a class="el" href="gr__sync__decimator_8h_source.html">gr_sync_decimator.h</a>></code><br/>
<code>#include <<a class="el" href="gr__rotator_8h_source.html">gr_rotator.h</a>></code><br/>
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Include dependency graph for gr_freq_xlating_fir_filter_scf.h:</div>
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<p><a href="gr__freq__xlating__fir__filter__scf_8h_source.html">Go to the source code of this file.</a></p>
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<tr><td colspan="2"><h2>Classes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="classgr__freq__xlating__fir__filter__scf.html">gr_freq_xlating_fir_filter_scf</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">FIR filter combined with frequency translation with short input, gr_complex output and float tapsThis class efficiently combines a frequency translation (typically "down conversion") with a FIR filter (typically low-pass) and decimation. It is ideally suited for a "channel selection filter" and can be efficiently used to select and decimate a narrow band signal out of wide bandwidth input. <a href="classgr__freq__xlating__fir__filter__scf.html#_details">More...</a><br/></td></tr>
<tr><td colspan="2"><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classboost_1_1shared__ptr.html">gr_freq_xlating_fir_filter_scf_sptr</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="gr__freq__xlating__fir__filter__scf_8h.html#a49ed46f749ff1a7267acd0fdcf0e2b3e">gr_make_freq_xlating_fir_filter_scf</a> (int decimation, const <a class="el" href="classstd_1_1vector.html">std::vector</a>< float > &<a class="el" href="interpolator__taps_8h.html#a30bf032e13c2a9fc4a98e14e390cd65a">taps</a>, double center_freq, double sampling_freq)</td></tr>
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<hr/><h2>Function Documentation</h2>
<a class="anchor" id="a49ed46f749ff1a7267acd0fdcf0e2b3e"></a><!-- doxytag: member="gr_freq_xlating_fir_filter_scf.h::gr_make_freq_xlating_fir_filter_scf" ref="a49ed46f749ff1a7267acd0fdcf0e2b3e" args="(int decimation, const std::vector< float > &taps, double center_freq, double sampling_freq)" -->
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<td class="memname"><a class="el" href="classboost_1_1shared__ptr.html">gr_freq_xlating_fir_filter_scf_sptr</a> gr_make_freq_xlating_fir_filter_scf </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>decimation</em>, </td>
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<td class="paramtype">const <a class="el" href="classstd_1_1vector.html">std::vector</a>< float > & </td>
<td class="paramname"> <em>taps</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">double </td>
<td class="paramname"> <em>center_freq</em>, </td>
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<td class="paramtype">double </td>
<td class="paramname"> <em>sampling_freq</em></td><td> </td>
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<td>)</td>
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<p>Construct a FIR filter with the given taps and a composite frequency translation that shifts center_freq down to zero Hz. The frequency translation logically comes before the filtering operation. </p>
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