<?xml version='1.0' encoding='ASCII'?> <flow_graph> <timestamp>Tue May 19 16:45:51 2009</timestamp> <block> <key>options</key> <param> <key>id</key> <value>var_sink_taps</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>title</key> <value>Variable Sink + Taps</value> </param> <param> <key>author</key> <value>Example</value> </param> <param> <key>description</key> <value>gnuradio flow graph</value> </param> <param> <key>window_size</key> <value>1280, 1024</value> </param> <param> <key>generate_options</key> <value>wx_gui</value> </param> <param> <key>category</key> <value>Custom</value> </param> <param> <key>realtime_scheduling</key> <value></value> </param> <param> <key>_coordinate</key> <value>(10, 10)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_noise_source_x</key> <param> <key>id</key> <value>gr_noise_source_x_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>noise_type</key> <value>gr.GR_GAUSSIAN</value> </param> <param> <key>amp</key> <value>1</value> </param> <param> <key>seed</key> <value>42</value> </param> <param> <key>_coordinate</key> <value>(619, 36)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_fir_filter_xxx</key> <param> <key>id</key> <value>gr_fir_filter_xxx_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>ccc</value> </param> <param> <key>decim</key> <value>1</value> </param> <param> <key>taps</key> <value>dest_taps</value> </param> <param> <key>_coordinate</key> <value>(831, 47)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_throttle</key> <param> <key>id</key> <value>gr_throttle_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>samples_per_second</key> <value>samp_rate</value> </param> <param> <key>vlen</key> <value>1</value> </param> <param> <key>_coordinate</key> <value>(999, 198)</value> </param> <param> <key>_rotation</key> <value>270</value> </param> </block> <block> <key>wxgui_fftsink2</key> <param> <key>id</key> <value>wxgui_fftsink2_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>title</key> <value>FFT Plot</value> </param> <param> <key>samp_rate</key> <value>samp_rate</value> </param> <param> <key>baseband_freq</key> <value>0</value> </param> <param> <key>y_per_div</key> <value>10</value> </param> <param> <key>y_divs</key> <value>10</value> </param> <param> <key>ref_level</key> <value>50</value> </param> <param> <key>fft_size</key> <value>1024</value> </param> <param> <key>fft_rate</key> <value>30</value> </param> <param> <key>peak_hold</key> <value>False</value> </param> <param> <key>average</key> <value>False</value> </param> <param> <key>avg_alpha</key> <value>0</value> </param> <param> <key>grid_pos</key> <value></value> </param> <param> <key>_coordinate</key> <value>(629, 184)</value> </param> <param> <key>_rotation</key> <value>180</value> </param> </block> <block> <key>import</key> <param> <key>id</key> <value>import_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>import</key> <value>from gnuradio.gr import firdes</value> </param> <param> <key>_coordinate</key> <value>(330, 120)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>dest_taps</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>[0]</value> </param> <param> <key>_coordinate</key> <value>(836, 223)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>samp_rate</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>32000</value> </param> <param> <key>_coordinate</key> <value>(831, 130)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>source_taps</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>firdes.low_pass(1, samp_rate, 4000, 2000)</value> </param> <param> <key>_coordinate</key> <value>(397, 191)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>taps_rate</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>10</value> </param> <param> <key>_coordinate</key> <value>(268, 189)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_vector_source_x</key> <param> <key>id</key> <value>gr_vector_source_x_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>vector</key> <value>source_taps</value> </param> <param> <key>repeat</key> <value>True</value> </param> <param> <key>vlen</key> <value>len(source_taps)</value> </param> <param> <key>_coordinate</key> <value>(205, 33)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>note</key> <param> <key>id</key> <value>note_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>note</key> <value>Pass the FIR taps via a variable sink.</value> </param> <param> <key>_coordinate</key> <value>(14, 141)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_throttle</key> <param> <key>id</key> <value>gr_throttle</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>samples_per_second</key> <value>taps_rate</value> </param> <param> <key>vlen</key> <value>len(source_taps)</value> </param> <param> <key>_coordinate</key> <value>(440, 41)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>blks2_variable_sink_x</key> <param> <key>id</key> <value>blks2_variable_sink_x_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>variable</key> <value>dest_taps</value> </param> <param> <key>decim</key> <value>1</value> </param> <param> <key>vlen</key> <value>len(source_taps)</value> </param> <param> <key>_coordinate</key> <value>(305, 283)</value> </param> <param> <key>_rotation</key> <value>180</value> </param> </block> <connection> <source_block_id>gr_noise_source_x_0</source_block_id> <sink_block_id>gr_fir_filter_xxx_0</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_fir_filter_xxx_0</source_block_id> <sink_block_id>gr_throttle_0</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_throttle_0</source_block_id> <sink_block_id>wxgui_fftsink2_0</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_vector_source_x_0</source_block_id> <sink_block_id>gr_throttle</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_throttle</source_block_id> <sink_block_id>blks2_variable_sink_x_0</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> </flow_graph>