<?xml version='1.0' encoding='ASCII'?> <flow_graph> <timestamp>Sun Aug 23 11:39:47 2009</timestamp> <block> <key>options</key> <param> <key>id</key> <value>resampler_demo</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>title</key> <value></value> </param> <param> <key>author</key> <value></value> </param> <param> <key>description</key> <value></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>run</key> <value>True</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>import</key> <param> <key>id</key> <value>import_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>import</key> <value>import math</value> </param> <param> <key>_coordinate</key> <value>(11, 59)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>rs_taps</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>firdes.low_pass(nphases, nphases, frac_bw, 0.5-frac_bw)</value> </param> <param> <key>_coordinate</key> <value>(273, 154)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_add_const_vxx</key> <param> <key>id</key> <value>adder</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>float</value> </param> <param> <key>const</key> <value>-1.0</value> </param> <param> <key>vlen</key> <value>1</value> </param> <param> <key>_coordinate</key> <value>(227, 303)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_throttle</key> <param> <key>id</key> <value>throttle</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>float</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>(227, 493)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>wxgui_fftsink2</key> <param> <key>id</key> <value>orig_fft</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>title</key> <value>Original Spectrum</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>30</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>1, 0, 1, 3</value> </param> <param> <key>notebook</key> <value></value> </param> <param> <key>_coordinate</key> <value>(409, 289)</value> </param> <param> <key>_rotation</key> <value>180</value> </param> </block> <block> <key>wxgui_fftsink2</key> <param> <key>id</key> <value>resamp_fft</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>title</key> <value>Resampled Spectrum</value> </param> <param> <key>samp_rate</key> <value>new_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>30</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>True</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>2, 0, 1, 3</value> </param> <param> <key>notebook</key> <value></value> </param> <param> <key>_coordinate</key> <value>(640, 256)</value> </param> <param> <key>_rotation</key> <value>180</value> </param> </block> <block> <key>gr_sig_source_x</key> <param> <key>id</key> <value>tri_source</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>float</value> </param> <param> <key>samp_rate</key> <value>samp_rate</value> </param> <param> <key>waveform</key> <value>gr.GR_TRI_WAVE</value> </param> <param> <key>freq</key> <value>0.05</value> </param> <param> <key>amp</key> <value>2.0</value> </param> <param> <key>offset</key> <value>0</value> </param> <param> <key>_coordinate</key> <value>(21, 271)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_frequency_modulator_fc</key> <param> <key>id</key> <value>fm_mod</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>sensitivity</key> <value>math.pi</value> </param> <param> <key>_coordinate</key> <value>(411, 493)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>blks2_pfb_arb_resampler_ccf</key> <param> <key>id</key> <value>resampler</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>rate</key> <value>float(new_rate)/samp_rate</value> </param> <param> <key>taps</key> <value>rs_taps</value> </param> <param> <key>size</key> <value>nphases</value> </param> <param> <key>_coordinate</key> <value>(641, 477)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>nphases</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>32</value> </param> <param> <key>_coordinate</key> <value>(185, 153)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_static_text</key> <param> <key>id</key> <value>samp_rate</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>label</key> <value>Sample Rate</value> </param> <param> <key>value</key> <value>44100</value> </param> <param> <key>converver</key> <value>float_converter</value> </param> <param> <key>formatter</key> <value>None</value> </param> <param> <key>grid_pos</key> <value>0, 0, 1, 1</value> </param> <param> <key>notebook</key> <value></value> </param> <param> <key>_coordinate</key> <value>(179, 14)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_static_text</key> <param> <key>id</key> <value>new_rate</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>label</key> <value>Resampled Rate</value> </param> <param> <key>value</key> <value>48000</value> </param> <param> <key>converver</key> <value>float_converter</value> </param> <param> <key>formatter</key> <value>None</value> </param> <param> <key>grid_pos</key> <value>0, 1, 1, 1</value> </param> <param> <key>notebook</key> <value></value> </param> <param> <key>_coordinate</key> <value>(328, 15)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_static_text</key> <param> <key>id</key> <value>frac_bw</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>label</key> <value>Fractional Bandwidth</value> </param> <param> <key>value</key> <value>0.45</value> </param> <param> <key>converver</key> <value>float_converter</value> </param> <param> <key>formatter</key> <value>lambda x: "%0.2f"%x</value> </param> <param> <key>grid_pos</key> <value>0,2,1,1</value> </param> <param> <key>notebook</key> <value></value> </param> <param> <key>_coordinate</key> <value>(473, 14)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <connection> <source_block_id>tri_source</source_block_id> <sink_block_id>adder</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>adder</source_block_id> <sink_block_id>throttle</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>resampler</source_block_id> <sink_block_id>resamp_fft</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>fm_mod</source_block_id> <sink_block_id>resampler</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>fm_mod</source_block_id> <sink_block_id>orig_fft</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>throttle</source_block_id> <sink_block_id>fm_mod</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> </flow_graph>