<?xml version="1.0"?> <!-- ################################################### ##Goertzel ################################################### --> <block> <name>Goertzel</name> <key>gr_goertzel_fc</key> <import>from gnuradio import gr</import> <make>gr.goertzel_fc($rate, $len, $freq)</make> <callback>set_freq($freq)</callback> <callback>set_rate($rate)</callback> <param> <name>Rate</name> <key>rate</key> <type>int</type> </param> <param> <name>Length</name> <key>len</key> <type>int</type> </param> <param> <name>Frequency</name> <key>freq</key> <type>real</type> </param> <sink> <name>in</name> <type>float</type> </sink> <source> <name>out</name> <type>complex</type> </source> </block>