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<?xml version="1.0"?>
<!--
###################################################
##Band Reject Filter: Custom wrapper
###################################################
-->
<block>
<name>Band Reject Filter</name>
<key>band_reject_filter</key>
<import>from gnuradio import gr</import>
<import>from gnuradio.gr import firdes</import>
<make>gr.$(type)(#if str($type).startswith('interp') then $interp else $decim#, firdes.band_reject(
$gain, $samp_rate, $low_cutoff_freq, $high_cutoff_freq, $width, $win, $beta))</make>
<callback>set_taps(firdes.band_reject($gain, $samp_rate, $low_cutoff_freq, $high_cutoff_freq, $width, $win, $beta))</callback>
<param>
<name>FIR Type</name>
<key>type</key>
<type>enum</type>
<option>
<name>Complex->Complex (Decimating)</name>
<key>fir_filter_ccf</key>
<opt>input:complex</opt>
<opt>output:complex</opt>
</option>
<option>
<name>Complex->Complex (Interpolating)</name>
<key>interp_fir_filter_ccf</key>
<opt>input:complex</opt>
<opt>output:complex</opt>
</option>
<option>
<name>Float->Float (Decimating)</name>
<key>fir_filter_fff</key>
<opt>input:float</opt>
<opt>output:float</opt>
</option>
<option>
<name>Float->Float (Interpolating)</name>
<key>interp_fir_filter_fff</key>
<opt>input:float</opt>
<opt>output:float</opt>
</option>
</param>
<param>
<name>Decimation</name>
<key>decim</key>
<value>1</value>
<type>int</type>
<hide>#if str($type).startswith('interp') then 'all' else 'none'#</hide>
</param>
<param>
<name>Interpolation</name>
<key>interp</key>
<value>1</value>
<type>int</type>
<hide>#if str($type).startswith('interp') then 'none' else 'all'#</hide>
</param>
<param>
<name>Gain</name>
<key>gain</key>
<value>1</value>
<type>real</type>
</param>
<param>
<name>Sample Rate</name>
<key>samp_rate</key>
<value>samp_rate</value>
<type>real</type>
</param>
<param>
<name>Low Cutoff Freq</name>
<key>low_cutoff_freq</key>
<type>real</type>
</param>
<param>
<name>High Cutoff Freq</name>
<key>high_cutoff_freq</key>
<type>real</type>
</param>
<param>
<name>Transition Width</name>
<key>width</key>
<type>real</type>
</param>
<param>
<name>Window</name>
<key>win</key>
<value>firdes.WIN_HAMMING</value>
<type>int</type>
<option>
<name>Hamming</name>
<key>firdes.WIN_HAMMING</key>
</option>
<option>
<name>Hann</name>
<key>firdes.WIN_HANN</key>
</option>
<option>
<name>Blackman</name>
<key>firdes.WIN_BLACKMAN</key>
</option>
<option>
<name>Rectangular</name>
<key>firdes.WIN_RECTANGULAR</key>
</option>
<option>
<name>Kaiser</name>
<key>firdes.WIN_KAISER</key>
</option>
</param>
<param>
<name>Beta</name>
<key>beta</key>
<value>6.76</value>
<type>real</type>
</param>
<sink>
<name>in</name>
<type>$type.input</type>
</sink>
<source>
<name>out</name>
<type>$type.output</type>
</source>
<doc>
This filter is a convenience wrapper for an fir filter and a firdes taps generating function.
Sample rate, cutoff frequency, and transition width are in Hertz.
The beta paramater only applies to the Kaiser window.
</doc>
</block>
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