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   1 <?xml version="1.0"?>
   2 <!--
   3 ###################################################
   4 ##Log Power FFT
   5 ###################################################
   6  -->
   7 <block>
   8         <name>Log Power FFT</name>
   9         <key>blks2_logpwrfft_x</key>
  10         <import>from gnuradio import blks2</import>
  11         <make>blks2.logpwrfft_$(type.fcn)(
  12         sample_rate=$sample_rate,
  13         fft_size=$fft_size,
  14         ref_scale=$ref_scale,
  15         frame_rate=$frame_rate,
  16         avg_alpha=$avg_alpha,
  17         average=$average,
  18 )</make>
  19         <callback>set_sample_rate($sample_rate)</callback>
  20         <callback>set_avg_alpha($avg_alpha)</callback>
  21         <param>
  22                 <name>Input Type</name>
  23                 <key>type</key>
  24                 <type>enum</type>
  25                 <option>
  26                         <name>Complex</name>
  27                         <key>complex</key>
  28                         <opt>fcn:c</opt>
  29                 </option>
  30                 <option>
  31                         <name>Float</name>
  32                         <key>float</key>
  33                         <opt>fcn:f</opt>
  34                 </option>
  35         </param>
  36         <param>
  37                 <name>Sample Rate</name>
  38                 <key>sample_rate</key>
  39                 <value>samp_rate</value>
  40                 <type>real</type>
  41         </param>
  42         <param>
  43                 <name>FFT Size</name>
  44                 <key>fft_size</key>
  45                 <value>1024</value>
  46                 <type>int</type>
  47         </param>
  48         <param>
  49                 <name>Reference Scale</name>
  50                 <key>ref_scale</key>
  51                 <value>2</value>
  52                 <type>real</type>
  53         </param>
  54         <param>
  55                 <name>Frame Rate</name>
  56                 <key>frame_rate</key>
  57                 <value>30</value>
  58                 <type>real</type>
  59         </param>
  60         <param>
  61                 <name>Average Alpha</name>
  62                 <key>avg_alpha</key>
  63                 <value>1.0</value>
  64                 <type>real</type>
  65         </param>
  66         <param>
  67                 <name>Average</name>
  68                 <key>average</key>
  69                 <value>False</value>
  70                 <type>enum</type>
  71                 <option>
  72                         <name>On</name>
  73                         <key>True</key>
  74                 </option>
  75                 <option>
  76                         <name>Off</name>
  77                         <key>False</key>
  78                 </option>
  79         </param>
  80         <sink>
  81                 <name>in</name>
  82                 <type>$type</type>
  83         </sink>
  84         <source>
  85                 <name>out</name>
  86                 <type>float</type>
  87                 <vlen>$fft_size</vlen>
  88         </source>
  89 </block>