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<?xml version="1.0"?>
<!--
###################################################
##Goertzel
###################################################
-->
<block>
<name>Goertzel</name>
<key>goertzel_fc</key>
<import>from gnuradio import fft</import>
<make>fft.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>
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