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   1 <?xml version="1.0"?>
   2 <!--
   3 ###################################################
   4 ##IIR Filter
   5 ###################################################
   6  -->
   7 <block>
   8         <name>IIR Filter</name>
   9         <key>gr_iir_filter_ffd</key>
  10         <import>from gnuradio import gr</import>
  11         <make>gr.iir_filter_ffd($fftaps, $fbtaps)</make>
  12         <callback>set_taps($fftaps, $fbtaps)</callback>
  13         <param>
  14                 <name>Feed-forward Taps</name>
  15                 <key>fftaps</key>
  16                 <type>real_vector</type>
  17         </param>
  18         <param>
  19                 <name>Feedback Taps</name>
  20                 <key>fbtaps</key>
  21                 <type>real_vector</type>
  22         </param>
  23         <sink>
  24                 <name>in</name>
  25                 <type>float</type>
  26         </sink>
  27         <source>
  28                 <name>out</name>
  29                 <type>float</type>
  30         </source>
  31 </block>