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fmradio-fft.grc
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<?xml version='1.0' encoding='ASCII'?>
<flow_graph>
<timestamp>Thu Oct 25 00:03:07 2012</timestamp>
<block>
<key>options</key>
<param>
<key>id</key>
<value>fmradio_fft</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>title</key>
<value>Variable Config Block Demonstration</value>
</param>
<param>
<key>author</key>
<value>Example</value>
</param>
<param>
<key>description</key>
<value>Save/Load freq from a config file.</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_options</key>
<value>prompt</value>
</param>
<param>
<key>run</key>
<value>True</value>
</param>
<param>
<key>max_nouts</key>
<value>0</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>variable</key>
<param>
<key>id</key>
<value>samp_rate</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>1024000</value>
</param>
<param>
<key>_coordinate</key>
<value>(10, 170)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>freq</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Frequency (Hz)</value>
</param>
<param>
<key>value</key>
<value>freq_init</value>
</param>
<param>
<key>min</key>
<value>76e6</value>
</param>
<param>
<key>max</key>
<value>90e6</value>
</param>
<param>
<key>num_steps</key>
<value>140</value>
</param>
<param>
<key>style</key>
<value>wx.SL_HORIZONTAL</value>
</param>
<param>
<key>converver</key>
<value>float_converter</value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(315, 15)</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>(345, 179)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blks2_wfm_rcv</key>
<param>
<key>id</key>
<value>blks2_wfm_rcv_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>quad_rate</key>
<value>samp_rate</value>
</param>
<param>
<key>audio_decimation</key>
<value>32</value>
</param>
<param>
<key>_coordinate</key>
<value>(165, 309)</value>
</param>
<param>
<key>_rotation</key>
<value>0</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>freq</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>ref_scale</key>
<value>2.0</value>
</param>
<param>
<key>fft_size</key>
<value>1024</value>
</param>
<param>
<key>fft_rate</key>
<value>15</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>win</key>
<value>None</value>
</param>
<param>
<key>win_size</key>
<value></value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>freqvar</key>
<value>None</value>
</param>
<param>
<key>_coordinate</key>
<value>(538, 122)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blks2_fm_deemph</key>
<param>
<key>id</key>
<value>blks2_fm_deemph_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>samp_rate</key>
<value>32000</value>
</param>
<param>
<key>tau</key>
<value>75e-6</value>
</param>
<param>
<key>_coordinate</key>
<value>(382, 308)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>audio_sink</key>
<param>
<key>id</key>
<value>audio_sink_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>samp_rate</key>
<value>32000</value>
</param>
<param>
<key>device_name</key>
<value></value>
</param>
<param>
<key>ok_to_block</key>
<value>True</value>
</param>
<param>
<key>num_inputs</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(559, 314)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_config</key>
<param>
<key>id</key>
<value>freq_init</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>82.5e6</value>
</param>
<param>
<key>type</key>
<value>real</value>
</param>
<param>
<key>config_file</key>
<value>config-fmradio.conf</value>
</param>
<param>
<key>section</key>
<value>main</value>
</param>
<param>
<key>option</key>
<value>freq</value>
</param>
<param>
<key>writeback</key>
<value>freq</value>
</param>
<param>
<key>_coordinate</key>
<value>(165, 13)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>rtl2832_source</key>
<param>
<key>id</key>
<value>rtl2832_source_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>verbose</key>
<value>False</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>sample_rate</key>
<value>samp_rate</value>
</param>
<param>
<key>frequency</key>
<value>freq</value>
</param>
<param>
<key>bandwidth</key>
<value>0</value>
</param>
<param>
<key>relative_gain</key>
<value>False</value>
</param>
<param>
<key>gain</key>
<value>100</value>
</param>
<param>
<key>gain_mode</key>
<value></value>
</param>
<param>
<key>auto_gain_mode</key>
<value>False</value>
</param>
<param>
<key>usb_vid</key>
<value>0x0</value>
</param>
<param>
<key>usb_pid</key>
<value>0x0</value>
</param>
<param>
<key>tuner_name</key>
<value></value>
</param>
<param>
<key>read_length</key>
<value>0</value>
</param>
<param>
<key>xfer_timeout</key>
<value>0</value>
</param>
<param>
<key>use_buffer</key>
<value>True</value>
</param>
<param>
<key>buf_mul</key>
<value>0</value>
</param>
<param>
<key>buf_level</key>
<value>0</value>
</param>
<param>
<key>fir_coeffs</key>
<value>[]</value>
</param>
<param>
<key>xtal_freq</key>
<value>0</value>
</param>
<param>
<key>status_out</key>
<value>False</value>
</param>
<param>
<key>_coordinate</key>
<value>(123, 175)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<connection>
<source_block_id>rtl2832_source_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>blks2_wfm_rcv_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blks2_wfm_rcv_0</source_block_id>
<sink_block_id>blks2_fm_deemph_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blks2_fm_deemph_0</source_block_id>
<sink_block_id>audio_sink_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>
</flow_graph>