gr-analog: clean up examples

I've converted the fm_tx and fm_rx examples to YML, and also made a few corrections so that the flow graphs work properly: * increased the output sample rate from 200k to 400k to fix distortion * added missing deemphasis to fm_rx * removed superfluous division by 8.0 from quadrature demod in fm_rx * increased output volume in fm_rx from 0.2 to 1.0 After these changes, a dial tone is heard when running fm_tx followed by fm_rx. I also lined up the blocks in the noise_power flow graph.
author: Clayton Smith <argilo@gmail.com> 2020-02-01 20:16:17 -0500
committer: devnulling <devnulling@users.noreply.github.com> 2020-02-03 14:04:32 -0800
commit: 9254dd459debc1464f4c544b737d1aecd5b39bca (patch)
tree: 15002c4d65ad23f081c54148b639e54c9a8ad57f /gr-analog/examples
parent: e9fbf9ecbe73cefdc7e475b034c29146a5f13759 (diff)
3 files changed, 1518 insertions, 1954 deletions
diff --git a/gr-analog/examples/fm_rx.grc b/gr-analog/examples/fm_rx.grc
index 5cf0d655df..c2bef79ca5 100644
--- a/gr-analog/examples/fm_rx.grc
+++ b/gr-analog/examples/fm_rx.grc
@@ -1,912 +1,758 @@
-<?xml version='1.0' encoding='ASCII'?>
-<flow_graph>
-  <timestamp>Thu Nov 21 20:41:12 2013</timestamp>
-  <block>
-    <key>options</key>
-    <param>
-      <key>id</key>
-      <value>fm_rx</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>qt_gui</value>
-    </param>
-    <param>
-      <key>category</key>
-      <value>Custom</value>
-    </param>
-    <param>
-      <key>run_options</key>
-      <value>run</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>volume</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>0.2</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(526, 13)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>fm_deviation_hz</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>75e3</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(107, 78)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>in_rate</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>200e3</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(265, 10)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>audio_rate</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>44.1e3</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(173, 9)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>32</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(453, 12)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>resamp_rate</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>audio_rate/in_rate</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(350, 11)</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>(14, 76)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>analog_quadrature_demod_cf</key>
-    <param>
-      <key>id</key>
-      <value>analog_quadrature_demod_cf_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gain</key>
-      <value>in_rate/(2*math.pi*fm_deviation_hz/8.0)</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(213, 211)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_file_source</key>
-    <param>
-      <key>id</key>
-      <value>blocks_file_source_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>file</key>
-      <value>dummy.dat</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>repeat</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(24, 203)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>float</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value></value>
-    </param>
-    <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
-    </param>
-    <param>
-      <key>fc</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>bw</key>
-      <value>audio_rate</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-140</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>10</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
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-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,1,1,1</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(486, 282)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_0_0_0_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>float</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value></value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>audio_rate</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,0,1,1</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(770, 179)</value>
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-    <key>qtgui_freq_sink_x</key>
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-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
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-      <value>float</value>
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-    <param>
-      <key>name</key>
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-    <param>
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-      <value>1024</value>
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-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
-    </param>
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-    </param>
-    <param>
-      <key>bw</key>
-      <value>audio_rate</value>
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-    <param>
-      <key>ymin</key>
-      <value>-140</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>10</value>
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-    <param>
-      <key>nconnections</key>
-      <value>1</value>
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-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,1,1,1</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
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-      <value>(769, 264)</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>int(audio_rate)</value>
-    </param>
-    <param>
-      <key>device_name</key>
-      <value>pulse</value>
-    </param>
-    <param>
-      <key>ok_to_block</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
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-      <key>_coordinate</key>
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-    </param>
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-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
-    <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>fff</value>
-    </param>
-    <param>
-      <key>rrate</key>
-      <value>resamp_rate</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>firdes.low_pass_2(volume*nfilts, nfilts*in_rate, 15e3, 1e3, 60, firdes.WIN_KAISER)</value>
-    </param>
-    <param>
-      <key>nfilts</key>
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-      <value>100</value>
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-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
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-    <param>
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-      <value>qtgui.TRIG_SLOPE_POS</value>
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-      <value>qtgui_time_sink_x_0_0_0</value>
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-    <param>
-      <key>_enabled</key>
-      <value>True</value>
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-    <param>
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-      <value>audio_rate</value>
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-    <param>
-      <key>ymin</key>
-      <value>-5</value>
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-    <param>
-      <key>ymax</key>
-      <value>5</value>
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-      <value>1</value>
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-      <key>update_time</key>
-      <value>0.10</value>
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-    <param>
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-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
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-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
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-    <param>
-      <key>tr_tag</key>
-      <value>""</value>
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-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
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-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
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-      <key>_coordinate</key>
-      <value>(485, 195)</value>
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-    <param>
-      <key>_rotation</key>
-      <value>0</value>
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-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value></value>
-    </param>
-    <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
-    </param>
-    <param>
-      <key>fc</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>bw</key>
-      <value>in_rate</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-140</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>10</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(209, 353)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_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>blocks_file_source_0</source_block_id>
-    <sink_block_id>analog_quadrature_demod_cf_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>analog_quadrature_demod_cf_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>analog_quadrature_demod_cf_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>analog_quadrature_demod_cf_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_file_source_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_file_source_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0_0_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-</flow_graph>
+options:
+  parameters:
+    author: ''
+    catch_exceptions: 'True'
+    category: Custom
+    cmake_opt: ''
+    comment: ''
+    copyright: ''
+    description: ''
+    gen_cmake: 'On'
+    gen_linking: dynamic
+    generate_options: qt_gui
+    hier_block_src_path: '.:'
+    id: fm_rx
+    max_nouts: '0'
+    output_language: python
+    placement: (0,0)
+    qt_qss_theme: ''
+    realtime_scheduling: ''
+    run: 'True'
+    run_command: '{python} -u {filename}'
+    run_options: run
+    sizing_mode: fixed
+    thread_safe_setters: ''
+    title: ''
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [16, 12.0]
+    rotation: 0
+    state: enabled
+
+blocks:
+- name: audio_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: 44.1e3
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [184, 12.0]
+    rotation: 0
+    state: enabled
+- name: fm_deviation_hz
+  id: variable
+  parameters:
+    comment: ''
+    value: 75e3
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [112, 76.0]
+    rotation: 0
+    state: enabled
+- name: in_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: 400e3
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [272, 12.0]
+    rotation: 0
+    state: enabled
+- name: nfilts
+  id: variable
+  parameters:
+    comment: ''
+    value: '32'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [464, 12.0]
+    rotation: 0
+    state: enabled
+- name: resamp_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: audio_rate/in_rate
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [360, 12.0]
+    rotation: 0
+    state: enabled
+- name: volume
+  id: variable
+  parameters:
+    comment: ''
+    value: '1.0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [536, 12.0]
+    rotation: 0
+    state: enabled
+- name: analog_fm_deemph_0
+  id: analog_fm_deemph
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samp_rate: in_rate
+    tau: 75e-6
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [408, 196.0]
+    rotation: 0
+    state: enabled
+- name: analog_quadrature_demod_cf_0
+  id: analog_quadrature_demod_cf
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    gain: in_rate/(2*math.pi*fm_deviation_hz)
+    maxoutbuf: '0'
+    minoutbuf: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [224, 204.0]
+    rotation: 0
+    state: enabled
+- name: audio_sink_0
+  id: audio_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    device_name: pulse
+    num_inputs: '1'
+    ok_to_block: 'True'
+    samp_rate: int(audio_rate)
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [920, 124.0]
+    rotation: 0
+    state: enabled
+- name: blocks_file_source_0
+  id: blocks_file_source
+  parameters:
+    affinity: ''
+    alias: ''
+    begin_tag: pmt.PMT_NIL
+    comment: ''
+    file: dummy.dat
+    length: '0'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    offset: '0'
+    repeat: 'True'
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [24, 204.0]
+    rotation: 0
+    state: enabled
+- name: import_0
+  id: import
+  parameters:
+    alias: ''
+    comment: ''
+    imports: import math
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [16, 76.0]
+    rotation: 0
+    state: enabled
+- name: pfb_arb_resampler_xxx_0
+  id: pfb_arb_resampler_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    atten: '100'
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    nfilts: nfilts
+    rrate: resamp_rate
+    samp_delay: '0'
+    taps: firdes.low_pass_2(volume*nfilts, nfilts*in_rate, 15e3, 1e3, 60, firdes.WIN_KAISER)
+    type: fff
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [616, 108.0]
+    rotation: 0
+    state: enabled
+- name: qtgui_freq_sink_x_0
+  id: qtgui_freq_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    average: '1.0'
+    axislabels: 'True'
+    bw: audio_rate
+    color1: '"blue"'
+    color10: '"dark blue"'
+    color2: '"red"'
+    color3: '"green"'
+    color4: '"black"'
+    color5: '"cyan"'
+    color6: '"magenta"'
+    color7: '"yellow"'
+    color8: '"dark red"'
+    color9: '"dark green"'
+    comment: ''
+    ctrlpanel: 'False'
+    fc: '0'
+    fftsize: '1024'
+    freqhalf: 'True'
+    grid: 'False'
+    gui_hint: 1,1,1,1
+    label: Relative Gain
+    label1: ''
+    label10: ''''''
+    label2: ''''''
+    label3: ''''''
+    label4: ''''''
+    label5: ''''''
+    label6: ''''''
+    label7: ''''''
+    label8: ''''''
+    label9: ''''''
+    legend: 'True'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    name: ''
+    nconnections: '1'
+    showports: 'False'
+    tr_chan: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_tag: '""'
+    type: float
+    units: dB
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    wintype: firdes.WIN_BLACKMAN_hARRIS
+    ymax: '10'
+    ymin: '-140'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [616, 304.0]
+    rotation: 0
+    state: enabled
+- name: qtgui_freq_sink_x_0_0
+  id: qtgui_freq_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    average: '1.0'
+    axislabels: 'True'
+    bw: in_rate
+    color1: '"blue"'
+    color10: '"dark blue"'
+    color2: '"red"'
+    color3: '"green"'
+    color4: '"black"'
+    color5: '"cyan"'
+    color6: '"magenta"'
+    color7: '"yellow"'
+    color8: '"dark red"'
+    color9: '"dark green"'
+    comment: ''
+    ctrlpanel: 'False'
+    fc: '0'
+    fftsize: '1024'
+    freqhalf: 'True'
+    grid: 'False'
+    gui_hint: 0,1,1,1
+    label: Relative Gain
+    label1: ''
+    label10: ''''''
+    label2: ''''''
+    label3: ''''''
+    label4: ''''''
+    label5: ''''''
+    label6: ''''''
+    label7: ''''''
+    label8: ''''''
+    label9: ''''''
+    legend: 'True'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    name: ''
+    nconnections: '1'
+    showports: 'False'
+    tr_chan: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_tag: '""'
+    type: complex
+    units: dB
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    wintype: firdes.WIN_BLACKMAN_hARRIS
+    ymax: '10'
+    ymin: '-140'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [224, 352.0]
+    rotation: 0
+    state: enabled
+- name: qtgui_freq_sink_x_0_1
+  id: qtgui_freq_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    average: '1.0'
+    axislabels: 'True'
+    bw: audio_rate
+    color1: '"blue"'
+    color10: '"dark blue"'
+    color2: '"red"'
+    color3: '"green"'
+    color4: '"black"'
+    color5: '"cyan"'
+    color6: '"magenta"'
+    color7: '"yellow"'
+    color8: '"dark red"'
+    color9: '"dark green"'
+    comment: ''
+    ctrlpanel: 'False'
+    fc: '0'
+    fftsize: '1024'
+    freqhalf: 'True'
+    grid: 'False'
+    gui_hint: 2,1,1,1
+    label: Relative Gain
+    label1: ''
+    label10: ''''''
+    label2: ''''''
+    label3: ''''''
+    label4: ''''''
+    label5: ''''''
+    label6: ''''''
+    label7: ''''''
+    label8: ''''''
+    label9: ''''''
+    legend: 'True'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    name: ''
+    nconnections: '1'
+    showports: 'False'
+    tr_chan: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_tag: '""'
+    type: float
+    units: dB
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    wintype: firdes.WIN_BLACKMAN_hARRIS
+    ymax: '10'
+    ymin: '-140'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [920, 288.0]
+    rotation: 0
+    state: enabled
+- name: qtgui_time_sink_x_0_0
+  id: qtgui_time_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    axislabels: 'True'
+    color1: blue
+    color10: dark blue
+    color2: red
+    color3: green
+    color4: black
+    color5: cyan
+    color6: magenta
+    color7: yellow
+    color8: dark red
+    color9: dark green
+    comment: ''
+    ctrlpanel: 'False'
+    entags: 'True'
+    grid: 'False'
+    gui_hint: 0,0,1,1
+    label1: Signal 1
+    label10: Signal 10
+    label2: Signal 2
+    label3: Signal 3
+    label4: Signal 4
+    label5: Signal 5
+    label6: Signal 6
+    label7: Signal 7
+    label8: Signal 8
+    label9: Signal 9
+    legend: 'True'
+    marker1: '-1'
+    marker10: '-1'
+    marker2: '-1'
+    marker3: '-1'
+    marker4: '-1'
+    marker5: '-1'
+    marker6: '-1'
+    marker7: '-1'
+    marker8: '-1'
+    marker9: '-1'
+    name: ''
+    nconnections: '1'
+    size: '1024'
+    srate: in_rate
+    stemplot: 'False'
+    style1: '1'
+    style10: '1'
+    style2: '1'
+    style3: '1'
+    style4: '1'
+    style5: '1'
+    style6: '1'
+    style7: '1'
+    style8: '1'
+    style9: '1'
+    tr_chan: '0'
+    tr_delay: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_slope: qtgui.TRIG_SLOPE_POS
+    tr_tag: '""'
+    type: complex
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    ylabel: Amplitude
+    ymax: '1.25'
+    ymin: '-1.25'
+    yunit: '""'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [224, 260.0]
+    rotation: 0
+    state: enabled
+- name: qtgui_time_sink_x_0_0_0
+  id: qtgui_time_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    axislabels: 'True'
+    color1: blue
+    color10: dark blue
+    color2: red
+    color3: green
+    color4: black
+    color5: cyan
+    color6: magenta
+    color7: yellow
+    color8: dark red
+    color9: dark green
+    comment: ''
+    ctrlpanel: 'False'
+    entags: 'True'
+    grid: 'False'
+    gui_hint: 1,0,1,1
+    label1: Signal 1
+    label10: Signal 10
+    label2: Signal 2
+    label3: Signal 3
+    label4: Signal 4
+    label5: Signal 5
+    label6: Signal 6
+    label7: Signal 7
+    label8: Signal 8
+    label9: Signal 9
+    legend: 'True'
+    marker1: '-1'
+    marker10: '-1'
+    marker2: '-1'
+    marker3: '-1'
+    marker4: '-1'
+    marker5: '-1'
+    marker6: '-1'
+    marker7: '-1'
+    marker8: '-1'
+    marker9: '-1'
+    name: ''
+    nconnections: '1'
+    size: '1024'
+    srate: audio_rate
+    stemplot: 'False'
+    style1: '1'
+    style10: '1'
+    style2: '1'
+    style3: '1'
+    style4: '1'
+    style5: '1'
+    style6: '1'
+    style7: '1'
+    style8: '1'
+    style9: '1'
+    tr_chan: '0'
+    tr_delay: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_slope: qtgui.TRIG_SLOPE_POS
+    tr_tag: '""'
+    type: float
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    ylabel: Amplitude
+    ymax: '5'
+    ymin: '-5'
+    yunit: '""'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [616, 212.0]
+    rotation: 0
+    state: enabled
+- name: qtgui_time_sink_x_0_0_0_0
+  id: qtgui_time_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    axislabels: 'True'
+    color1: blue
+    color10: dark blue
+    color2: red
+    color3: green
+    color4: black
+    color5: cyan
+    color6: magenta
+    color7: yellow
+    color8: dark red
+    color9: dark green
+    comment: ''
+    ctrlpanel: 'False'
+    entags: 'True'
+    grid: 'False'
+    gui_hint: 2,0,1,1
+    label1: Signal 1
+    label10: Signal 10
+    label2: Signal 2
+    label3: Signal 3
+    label4: Signal 4
+    label5: Signal 5
+    label6: Signal 6
+    label7: Signal 7
+    label8: Signal 8
+    label9: Signal 9
+    legend: 'True'
+    marker1: '-1'
+    marker10: '-1'
+    marker2: '-1'
+    marker3: '-1'
+    marker4: '-1'
+    marker5: '-1'
+    marker6: '-1'
+    marker7: '-1'
+    marker8: '-1'
+    marker9: '-1'
+    name: ''
+    nconnections: '1'
+    size: '1024'
+    srate: audio_rate
+    stemplot: 'False'
+    style1: '1'
+    style10: '1'
+    style2: '1'
+    style3: '1'
+    style4: '1'
+    style5: '1'
+    style6: '1'
+    style7: '1'
+    style8: '1'
+    style9: '1'
+    tr_chan: '0'
+    tr_delay: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_slope: qtgui.TRIG_SLOPE_POS
+    tr_tag: '""'
+    type: float
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    ylabel: Amplitude
+    ymax: '1'
+    ymin: '-1'
+    yunit: '""'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [920, 196.0]
+    rotation: 0
+    state: enabled
+
+connections:
+- [analog_fm_deemph_0, '0', pfb_arb_resampler_xxx_0, '0']
+- [analog_fm_deemph_0, '0', qtgui_freq_sink_x_0, '0']
+- [analog_fm_deemph_0, '0', qtgui_time_sink_x_0_0_0, '0']
+- [analog_quadrature_demod_cf_0, '0', analog_fm_deemph_0, '0']
+- [blocks_file_source_0, '0', analog_quadrature_demod_cf_0, '0']
+- [blocks_file_source_0, '0', qtgui_freq_sink_x_0_0, '0']
+- [blocks_file_source_0, '0', qtgui_time_sink_x_0_0, '0']
+- [pfb_arb_resampler_xxx_0, '0', audio_sink_0, '0']
+- [pfb_arb_resampler_xxx_0, '0', qtgui_freq_sink_x_0_1, '0']
+- [pfb_arb_resampler_xxx_0, '0', qtgui_time_sink_x_0_0_0_0, '0']
+
+metadata:
+  file_format: 1
diff --git a/gr-analog/examples/fm_tx.grc b/gr-analog/examples/fm_tx.grc
index bb13417a6b..87f1cb83d1 100644
--- a/gr-analog/examples/fm_tx.grc
+++ b/gr-analog/examples/fm_tx.grc
@@ -1,1016 +1,656 @@
-<?xml version='1.0' encoding='ASCII'?>
-<flow_graph>
-  <timestamp>Thu Nov 21 21:57:42 2013</timestamp>
-  <block>
-    <key>options</key>
-    <param>
-      <key>id</key>
-      <value>fm_tx</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>qt_gui</value>
-    </param>
-    <param>
-      <key>category</key>
-      <value>Custom</value>
-    </param>
-    <param>
-      <key>run_options</key>
-      <value>run</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>nfilts</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>32</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(708, 16)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>audio_rate</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>44.1e3</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(173, 10)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>in_rate</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>50e3</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(265, 10)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>tx_rate</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>200e3</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(345, 11)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>resamp_rate</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>in_rate/audio_rate</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(430, 12)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>analog_sig_source_x</key>
-    <param>
-      <key>id</key>
-      <value>analog_sig_source_x_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>float</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>audio_rate</value>
-    </param>
-    <param>
-      <key>waveform</key>
-      <value>analog.GR_COS_WAVE</value>
-    </param>
-    <param>
-      <key>freq</key>
-      <value>350</value>
-    </param>
-    <param>
-      <key>amp</key>
-      <value>0.25</value>
-    </param>
-    <param>
-      <key>offset</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(18, 92)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>analog_sig_source_x</key>
-    <param>
-      <key>id</key>
-      <value>analog_sig_source_x_1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>float</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>audio_rate</value>
-    </param>
-    <param>
-      <key>waveform</key>
-      <value>analog.GR_COS_WAVE</value>
-    </param>
-    <param>
-      <key>freq</key>
-      <value>440</value>
-    </param>
-    <param>
-      <key>amp</key>
-      <value>0.25</value>
-    </param>
-    <param>
-      <key>offset</key>
-      <value>0</value>
-    </param>
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-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
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-      <key>_coordinate</key>
-      <value>(18, 207)</value>
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-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_add_xx</key>
-    <param>
-      <key>id</key>
-      <value>blocks_add_xx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>float</value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(252, 164)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_0_0_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>float</value>
-    </param>
-    <param>
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-      <value></value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>audio_rate</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>1</value>
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-      <key>nconnections</key>
-      <value>1</value>
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-      <key>update_time</key>
-      <value>0.10</value>
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-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
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-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>0</value>
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-    <param>
-      <key>tr_chan</key>
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-      <key>tr_tag</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(377, 256)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
-    </param>
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-    </param>
-    <param>
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-      <value>float</value>
-    </param>
-    <param>
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-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
-    </param>
-    <param>
-      <key>fc</key>
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-    <param>
-      <key>bw</key>
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-      <value>-140</value>
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-      <key>ymax</key>
-      <value>10</value>
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-      <value>0.10</value>
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-      <value>1,0,1,1</value>
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-    <param>
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-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_skiphead</key>
-    <param>
-      <key>id</key>
-      <value>blocks_skiphead_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>num_items</key>
-      <value>5000</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(897, 16)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>analog_wfm_tx</key>
-    <param>
-      <key>id</key>
-      <value>analog_wfm_tx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>audio_rate</key>
-      <value>int(in_rate)</value>
-    </param>
-    <param>
-      <key>quad_rate</key>
-      <value>int(tx_rate)</value>
-    </param>
-    <param>
-      <key>tau</key>
-      <value>75e-6</value>
-    </param>
-    <param>
-      <key>max_dev</key>
-      <value>75e3</value>
-    </param>
-    <param>
-      <key>fh</key>
-      <value>0.925 * tx_rate/2.0</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(659, 153)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
-    <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>fff</value>
-    </param>
-    <param>
-      <key>rrate</key>
-      <value>resamp_rate</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>firdes.low_pass_2(nfilts, nfilts*in_rate, 20e3, 2e3, 60, firdes.WIN_KAISER)</value>
-    </param>
-    <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>atten</key>
-      <value>100</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(377, 153)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>parameter</key>
-    <param>
-      <key>id</key>
-      <value>nitems</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Number of items to save</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>1000000</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>intx</value>
-    </param>
-    <param>
-      <key>short_id</key>
-      <value>N</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(534, 13)</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>int(audio_rate)</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>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(377, 83)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <connection>
-    <source_block_id>analog_sig_source_x_0</source_block_id>
-    <sink_block_id>blocks_add_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>analog_sig_source_x_1</source_block_id>
-    <sink_block_id>blocks_add_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>1</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>analog_wfm_tx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_add_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_add_xx_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>blocks_add_xx_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_add_xx_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>analog_wfm_tx_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>analog_wfm_tx_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_head_0</source_block_id>
-    <sink_block_id>blocks_file_sink_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>analog_wfm_tx_0</source_block_id>
-    <sink_block_id>blocks_skiphead_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_skiphead_0</source_block_id>
-    <sink_block_id>blocks_head_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-</flow_graph>
+options:
+  parameters:
+    author: ''
+    catch_exceptions: 'True'
+    category: Custom
+    cmake_opt: ''
+    comment: ''
+    copyright: ''
+    description: ''
+    gen_cmake: 'On'
+    gen_linking: dynamic
+    generate_options: qt_gui
+    hier_block_src_path: '.:'
+    id: fm_tx
+    max_nouts: '0'
+    output_language: python
+    placement: (0,0)
+    qt_qss_theme: ''
+    realtime_scheduling: ''
+    run: 'True'
+    run_command: '{python} -u {filename}'
+    run_options: run
+    sizing_mode: fixed
+    thread_safe_setters: ''
+    title: ''
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [16, 12.0]
+    rotation: 0
+    state: enabled
+
+blocks:
+- name: audio_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: 44.1e3
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [184, 12.0]
+    rotation: 0
+    state: enabled
+- name: in_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: 50e3
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [272, 12.0]
+    rotation: 0
+    state: enabled
+- name: nfilts
+  id: variable
+  parameters:
+    comment: ''
+    value: '32'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [720, 12.0]
+    rotation: 0
+    state: enabled
+- name: resamp_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: in_rate/audio_rate
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [440, 12.0]
+    rotation: 0
+    state: enabled
+- name: tx_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: 400e3
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [352, 12.0]
+    rotation: 0
+    state: enabled
+- name: analog_sig_source_x_0
+  id: analog_sig_source_x
+  parameters:
+    affinity: ''
+    alias: ''
+    amp: '0.25'
+    comment: ''
+    freq: '350'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    offset: '0'
+    phase: '0'
+    samp_rate: audio_rate
+    type: float
+    waveform: analog.GR_COS_WAVE
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [24, 92.0]
+    rotation: 0
+    state: enabled
+- name: analog_sig_source_x_1
+  id: analog_sig_source_x
+  parameters:
+    affinity: ''
+    alias: ''
+    amp: '0.25'
+    comment: ''
+    freq: '440'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    offset: '0'
+    phase: '0'
+    samp_rate: audio_rate
+    type: float
+    waveform: analog.GR_COS_WAVE
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [24, 228.0]
+    rotation: 0
+    state: enabled
+- name: analog_wfm_tx_0
+  id: analog_wfm_tx
+  parameters:
+    affinity: ''
+    alias: ''
+    audio_rate: int(in_rate)
+    comment: ''
+    fh: '-1.0'
+    max_dev: 75e3
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    quad_rate: int(tx_rate)
+    tau: 75e-6
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [656, 148.0]
+    rotation: 0
+    state: enabled
+- name: audio_sink_0
+  id: audio_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    device_name: ''
+    num_inputs: '1'
+    ok_to_block: 'True'
+    samp_rate: int(audio_rate)
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [392, 100.0]
+    rotation: 0
+    state: enabled
+- name: blocks_add_xx_0
+  id: blocks_add_xx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_inputs: '2'
+    type: float
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [256, 168.0]
+    rotation: 0
+    state: enabled
+- name: blocks_file_sink_0
+  id: blocks_file_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    append: 'False'
+    comment: ''
+    file: dummy.dat
+    type: complex
+    unbuffered: 'False'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1064, 76.0]
+    rotation: 180
+    state: enabled
+- name: blocks_head_0
+  id: blocks_head
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_items: nitems
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1104, 20.0]
+    rotation: 0
+    state: enabled
+- name: blocks_skiphead_0
+  id: blocks_skiphead
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_items: '5000'
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [944, 20.0]
+    rotation: 0
+    state: enabled
+- name: nitems
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Number of items to save
+    short_id: N
+    type: intx
+    value: '1000000'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [544, 12.0]
+    rotation: 0
+    state: enabled
+- name: pfb_arb_resampler_xxx_0
+  id: pfb_arb_resampler_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    atten: '100'
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    nfilts: nfilts
+    rrate: resamp_rate
+    samp_delay: '0'
+    taps: firdes.low_pass_2(nfilts, nfilts*in_rate, 20e3, 2e3, 60, firdes.WIN_KAISER)
+    type: fff
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [392, 156.0]
+    rotation: 0
+    state: enabled
+- name: qtgui_freq_sink_x_0
+  id: qtgui_freq_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    average: '1.0'
+    axislabels: 'True'
+    bw: audio_rate
+    color1: '"blue"'
+    color10: '"dark blue"'
+    color2: '"red"'
+    color3: '"green"'
+    color4: '"black"'
+    color5: '"cyan"'
+    color6: '"magenta"'
+    color7: '"yellow"'
+    color8: '"dark red"'
+    color9: '"dark green"'
+    comment: ''
+    ctrlpanel: 'False'
+    fc: '0'
+    fftsize: '1024'
+    freqhalf: 'True'
+    grid: 'False'
+    gui_hint: 1,0,1,1
+    label: Relative Gain
+    label1: ''
+    label10: ''''''
+    label2: ''''''
+    label3: ''''''
+    label4: ''''''
+    label5: ''''''
+    label6: ''''''
+    label7: ''''''
+    label8: ''''''
+    label9: ''''''
+    legend: 'True'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    name: ''
+    nconnections: '1'
+    showports: 'False'
+    tr_chan: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_tag: '""'
+    type: float
+    units: dB
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    wintype: firdes.WIN_BLACKMAN_hARRIS
+    ymax: '10'
+    ymin: '-140'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [392, 344.0]
+    rotation: 0
+    state: enabled
+- name: qtgui_freq_sink_x_0_0
+  id: qtgui_freq_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    average: '1.0'
+    axislabels: 'True'
+    bw: tx_rate
+    color1: '"blue"'
+    color10: '"dark blue"'
+    color2: '"red"'
+    color3: '"green"'
+    color4: '"black"'
+    color5: '"cyan"'
+    color6: '"magenta"'
+    color7: '"yellow"'
+    color8: '"dark red"'
+    color9: '"dark green"'
+    comment: ''
+    ctrlpanel: 'False'
+    fc: '0'
+    fftsize: '1024'
+    freqhalf: 'True'
+    grid: 'False'
+    gui_hint: 1,1,1,1
+    label: Relative Gain
+    label1: ''
+    label10: ''''''
+    label2: ''''''
+    label3: ''''''
+    label4: ''''''
+    label5: ''''''
+    label6: ''''''
+    label7: ''''''
+    label8: ''''''
+    label9: ''''''
+    legend: 'True'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    name: ''
+    nconnections: '1'
+    showports: 'False'
+    tr_chan: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_tag: '""'
+    type: complex
+    units: dB
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    wintype: firdes.WIN_BLACKMAN_hARRIS
+    ymax: '10'
+    ymin: '-140'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1064, 248.0]
+    rotation: 0
+    state: enabled
+- name: qtgui_time_sink_x_0_0
+  id: qtgui_time_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    axislabels: 'True'
+    color1: blue
+    color10: dark blue
+    color2: red
+    color3: green
+    color4: black
+    color5: cyan
+    color6: magenta
+    color7: yellow
+    color8: dark red
+    color9: dark green
+    comment: ''
+    ctrlpanel: 'False'
+    entags: 'True'
+    grid: 'False'
+    gui_hint: 0,1,1,1
+    label1: Signal 1
+    label10: Signal 10
+    label2: Signal 2
+    label3: Signal 3
+    label4: Signal 4
+    label5: Signal 5
+    label6: Signal 6
+    label7: Signal 7
+    label8: Signal 8
+    label9: Signal 9
+    legend: 'True'
+    marker1: '-1'
+    marker10: '-1'
+    marker2: '-1'
+    marker3: '-1'
+    marker4: '-1'
+    marker5: '-1'
+    marker6: '-1'
+    marker7: '-1'
+    marker8: '-1'
+    marker9: '-1'
+    name: ''
+    nconnections: '1'
+    size: '1024'
+    srate: tx_rate
+    stemplot: 'False'
+    style1: '1'
+    style10: '1'
+    style2: '1'
+    style3: '1'
+    style4: '1'
+    style5: '1'
+    style6: '1'
+    style7: '1'
+    style8: '1'
+    style9: '1'
+    tr_chan: '0'
+    tr_delay: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_slope: qtgui.TRIG_SLOPE_POS
+    tr_tag: '""'
+    type: complex
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    ylabel: Amplitude
+    ymax: '1'
+    ymin: '-1'
+    yunit: '""'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1064, 164.0]
+    rotation: 0
+    state: enabled
+- name: qtgui_time_sink_x_0_0_0
+  id: qtgui_time_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    axislabels: 'True'
+    color1: blue
+    color10: dark blue
+    color2: red
+    color3: green
+    color4: black
+    color5: cyan
+    color6: magenta
+    color7: yellow
+    color8: dark red
+    color9: dark green
+    comment: ''
+    ctrlpanel: 'False'
+    entags: 'True'
+    grid: 'False'
+    gui_hint: 0,0,1,1
+    label1: Signal 1
+    label10: Signal 10
+    label2: Signal 2
+    label3: Signal 3
+    label4: Signal 4
+    label5: Signal 5
+    label6: Signal 6
+    label7: Signal 7
+    label8: Signal 8
+    label9: Signal 9
+    legend: 'True'
+    marker1: '-1'
+    marker10: '-1'
+    marker2: '-1'
+    marker3: '-1'
+    marker4: '-1'
+    marker5: '-1'
+    marker6: '-1'
+    marker7: '-1'
+    marker8: '-1'
+    marker9: '-1'
+    name: ''
+    nconnections: '1'
+    size: '1024'
+    srate: audio_rate
+    stemplot: 'False'
+    style1: '1'
+    style10: '1'
+    style2: '1'
+    style3: '1'
+    style4: '1'
+    style5: '1'
+    style6: '1'
+    style7: '1'
+    style8: '1'
+    style9: '1'
+    tr_chan: '0'
+    tr_delay: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_slope: qtgui.TRIG_SLOPE_POS
+    tr_tag: '""'
+    type: float
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    ylabel: Amplitude
+    ymax: '1'
+    ymin: '-1'
+    yunit: '""'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [392, 260.0]
+    rotation: 0
+    state: enabled
+
+connections:
+- [analog_sig_source_x_0, '0', blocks_add_xx_0, '0']
+- [analog_sig_source_x_1, '0', blocks_add_xx_0, '1']
+- [analog_wfm_tx_0, '0', blocks_skiphead_0, '0']
+- [analog_wfm_tx_0, '0', qtgui_freq_sink_x_0_0, '0']
+- [analog_wfm_tx_0, '0', qtgui_time_sink_x_0_0, '0']
+- [blocks_add_xx_0, '0', audio_sink_0, '0']
+- [blocks_add_xx_0, '0', pfb_arb_resampler_xxx_0, '0']
+- [blocks_add_xx_0, '0', qtgui_freq_sink_x_0, '0']
+- [blocks_add_xx_0, '0', qtgui_time_sink_x_0_0_0, '0']
+- [blocks_head_0, '0', blocks_file_sink_0, '0']
+- [blocks_skiphead_0, '0', blocks_head_0, '0']
+- [pfb_arb_resampler_xxx_0, '0', analog_wfm_tx_0, '0']
+
+metadata:
+  file_format: 1
diff --git a/gr-analog/examples/noise_power.grc b/gr-analog/examples/noise_power.grc
index 2151e9b03d..43fa237a13 100644
--- a/gr-analog/examples/noise_power.grc
+++ b/gr-analog/examples/noise_power.grc
@@ -1,6 +1,7 @@
 options:
   parameters:
     author: ''
+    catch_exceptions: 'True'
     category: Custom
     cmake_opt: ''
     comment: ''
@@ -22,9 +23,11 @@ options:
     sizing_mode: fixed
     thread_safe_setters: ''
     title: ''
-    window_size: 1280, 1024
   states:
-    coordinate: [8, 11]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 12.0]
     rotation: 0
     state: enabled
 
@@ -44,7 +47,10 @@ blocks:
     value: '1'
     widget: counter_slider
   states:
-    coordinate: [8, 435]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 436.0]
     rotation: 0
     state: enabled
 - name: samp_rate
@@ -53,7 +59,10 @@ blocks:
     comment: ''
     value: '32000'
   states:
-    coordinate: [176, 11]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [176, 12.0]
     rotation: 0
     state: enabled
 - name: analog_fastnoise_source_x_0
@@ -70,7 +79,10 @@ blocks:
     seed: '0'
     type: complex
   states:
-    coordinate: [8, 75]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 76.0]
     rotation: 0
     state: enabled
 - name: analog_fastnoise_source_x_1
@@ -87,7 +99,10 @@ blocks:
     seed: '0'
     type: float
   states:
-    coordinate: [8, 171]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 172.0]
     rotation: 0
     state: enabled
 - name: analog_noise_source_x_0
@@ -103,7 +118,10 @@ blocks:
     seed: '0'
     type: complex
   states:
-    coordinate: [8, 267]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 268.0]
     rotation: 0
     state: enabled
 - name: analog_noise_source_x_1
@@ -119,7 +137,10 @@ blocks:
     seed: '0'
     type: float
   states:
-    coordinate: [8, 347]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 348.0]
     rotation: 0
     state: enabled
 - name: blocks_abs_xx_0
@@ -133,7 +154,10 @@ blocks:
     type: float
     vlen: '1'
   states:
-    coordinate: [368, 368]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [376, 368.0]
     rotation: 0
     state: enabled
 - name: blocks_abs_xx_0_0
@@ -147,7 +171,10 @@ blocks:
     type: float
     vlen: '1'
   states:
-    coordinate: [368, 200]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [376, 200.0]
     rotation: 0
     state: enabled
 - name: blocks_complex_to_mag_squared_1
@@ -160,7 +187,10 @@ blocks:
     minoutbuf: '0'
     vlen: '1'
   states:
-    coordinate: [368, 288]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [400, 288.0]
     rotation: 0
     state: enabled
 - name: blocks_complex_to_mag_squared_2
@@ -173,7 +203,10 @@ blocks:
     minoutbuf: '0'
     vlen: '1'
   states:
-    coordinate: [368, 104]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [400, 104.0]
     rotation: 0
     state: enabled
 - name: blocks_multiply_xx_0
@@ -188,7 +221,10 @@ blocks:
     type: float
     vlen: '1'
   states:
-    coordinate: [480, 352]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [488, 352.0]
     rotation: 0
     state: enabled
 - name: blocks_multiply_xx_0_0
@@ -203,7 +239,10 @@ blocks:
     type: float
     vlen: '1'
   states:
-    coordinate: [480, 184]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [488, 184.0]
     rotation: 0
     state: enabled
 - name: blocks_nlog10_ff_0
@@ -218,7 +257,10 @@ blocks:
     n: '10'
     vlen: '1'
   states:
-    coordinate: [784, 91]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [808, 100.0]
     rotation: 0
     state: enabled
 - name: blocks_nlog10_ff_0_0
@@ -233,7 +275,10 @@ blocks:
     n: '10'
     vlen: '1'
   states:
-    coordinate: [784, 187]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [808, 196.0]
     rotation: 0
     state: enabled
 - name: blocks_nlog10_ff_0_1
@@ -248,7 +293,10 @@ blocks:
     n: '10'
     vlen: '1'
   states:
-    coordinate: [784, 275]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [808, 284.0]
     rotation: 0
     state: enabled
 - name: blocks_nlog10_ff_0_2
@@ -263,7 +311,10 @@ blocks:
     n: '10'
     vlen: '1'
   states:
-    coordinate: [784, 355]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [808, 364.0]
     rotation: 0
     state: enabled
 - name: blocks_throttle_0
@@ -279,7 +330,10 @@ blocks:
     type: complex
     vlen: '1'
   states:
-    coordinate: [208, 99]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [216, 100.0]
     rotation: 0
     state: enabled
 - name: blocks_throttle_0_0
@@ -295,7 +349,10 @@ blocks:
     type: float
     vlen: '1'
   states:
-    coordinate: [208, 195]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [216, 196.0]
     rotation: 0
     state: enabled
 - name: blocks_throttle_0_1
@@ -311,7 +368,10 @@ blocks:
     type: complex
     vlen: '1'
   states:
-    coordinate: [208, 283]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [216, 284.0]
     rotation: 0
     state: enabled
 - name: blocks_throttle_0_2
@@ -327,7 +387,10 @@ blocks:
     type: float
     vlen: '1'
   states:
-    coordinate: [208, 363]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [216, 364.0]
     rotation: 0
     state: enabled
 - name: qtgui_number_sink_0
@@ -387,6 +450,9 @@ blocks:
     unit9: ''
     update_time: '0.10'
   states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
     coordinate: [992, 208]
     rotation: 0
     state: enabled
@@ -402,7 +468,10 @@ blocks:
     type: float
     vlen: '1'
   states:
-    coordinate: [592, 99]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [608, 100.0]
     rotation: 0
     state: enabled
 - name: single_pole_iir_filter_xx_0_0
@@ -417,7 +486,10 @@ blocks:
     type: float
     vlen: '1'
   states:
-    coordinate: [592, 195]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [608, 196.0]
     rotation: 0
     state: enabled
 - name: single_pole_iir_filter_xx_0_1
@@ -432,7 +504,10 @@ blocks:
     type: float
     vlen: '1'
   states:
-    coordinate: [592, 283]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [608, 284.0]
     rotation: 0
     state: enabled
 - name: single_pole_iir_filter_xx_0_2
@@ -447,7 +522,10 @@ blocks:
     type: float
     vlen: '1'
   states:
-    coordinate: [592, 363]
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [608, 364.0]
     rotation: 0
     state: enabled
author	Clayton Smith <argilo@gmail.com>	2020-02-01 20:16:17 -0500
committer	devnulling <devnulling@users.noreply.github.com>	2020-02-03 14:04:32 -0800
commit	9254dd459debc1464f4c544b737d1aecd5b39bca (patch)
tree	15002c4d65ad23f081c54148b639e54c9a8ad57f /gr-analog/examples
parent	e9fbf9ecbe73cefdc7e475b034c29146a5f13759 (diff)