usb_audio.grc

<?xml version='1.0' encoding='utf-8'?>
<?grc format='1' created='3.7.11'?>
<flow_graph>
  <timestamp>Sun Jun 28 22:19:52 2020</timestamp>
  <block>
    <key>options</key>
    <param>
      <key>author</key>
      <value></value>
    </param>
    <param>
      <key>window_size</key>
      <value></value>
    </param>
    <param>
      <key>category</key>
      <value>[GRC Hier Blocks]</value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>description</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(8, 8)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>generate_options</key>
      <value>qt_gui</value>
    </param>
    <param>
      <key>hier_block_src_path</key>
      <value>.:</value>
    </param>
    <param>
      <key>id</key>
      <value>top_block</value>
    </param>
    <param>
      <key>max_nouts</key>
      <value>0</value>
    </param>
    <param>
      <key>qt_qss_theme</key>
      <value></value>
    </param>
    <param>
      <key>realtime_scheduling</key>
      <value></value>
    </param>
    <param>
      <key>run_command</key>
      <value>{python} -u {filename}</value>
    </param>
    <param>
      <key>run_options</key>
      <value>prompt</value>
    </param>
    <param>
      <key>run</key>
      <value>True</value>
    </param>
    <param>
      <key>thread_safe_setters</key>
      <value></value>
    </param>
    <param>
      <key>title</key>
      <value></value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(112, 156)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>audio_samp_rate</value>
    </param>
    <param>
      <key>value</key>
      <value>48000</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(8, 156)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>samp_rate</value>
    </param>
    <param>
      <key>value</key>
      <value>1152000</value>
    </param>
  </block>
  <block>
    <key>variable_qtgui_range</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>value</key>
      <value>10</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(48, 244)</value>
    </param>
    <param>
      <key>gui_hint</key>
      <value></value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>volume_db</value>
    </param>
    <param>
      <key>label</key>
      <value></value>
    </param>
    <param>
      <key>min_len</key>
      <value>256</value>
    </param>
    <param>
      <key>orient</key>
      <value>Qt.Horizontal</value>
    </param>
    <param>
      <key>start</key>
      <value>-10</value>
    </param>
    <param>
      <key>step</key>
      <value>0.1</value>
    </param>
    <param>
      <key>stop</key>
      <value>20</value>
    </param>
    <param>
      <key>rangeType</key>
      <value>float</value>
    </param>
    <param>
      <key>widget</key>
      <value>counter_slider</value>
    </param>
  </block>
  <block>
    <key>audio_sink</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>device_name</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(1072, 228)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>audio_sink_0</value>
    </param>
    <param>
      <key>num_inputs</key>
      <value>1</value>
    </param>
    <param>
      <key>ok_to_block</key>
      <value>True</value>
    </param>
    <param>
      <key>samp_rate</key>
      <value>audio_samp_rate</value>
    </param>
  </block>
  <block>
    <key>blocks_char_to_float</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(864, 68)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_char_to_float_0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>scale</key>
      <value>1</value>
    </param>
    <param>
      <key>vlen</key>
      <value>1</value>
    </param>
  </block>
  <block>
    <key>blocks_file_source</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>file</key>
      <value>/home/mmullins/projects/stm32f4/stm32f4-experimentation/usb_audio_1152000_3</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(432, 60)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_file_source_0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>type</key>
      <value>byte</value>
    </param>
    <param>
      <key>repeat</key>
      <value>False</value>
    </param>
    <param>
      <key>vlen</key>
      <value>1</value>
    </param>
  </block>
  <block>
    <key>blocks_multiply_const_vxx</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>const</key>
      <value>10**(volume_db/10)</value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(888, 228)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_multiply_const_vxx_0</value>
    </param>
    <param>
      <key>type</key>
      <value>float</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>vlen</key>
      <value>1</value>
    </param>
  </block>
  <block>
    <key>blocks_packed_to_unpacked_xx</key>
    <param>
      <key>bits_per_chunk</key>
      <value>1</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>endianness</key>
      <value>gr.GR_MSB_FIRST</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(664, 60)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_packed_to_unpacked_xx_0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>num_ports</key>
      <value>1</value>
    </param>
    <param>
      <key>type</key>
      <value>byte</value>
    </param>
  </block>
  <block>
    <key>blocks_wavfile_sink</key>
    <param>
      <key>bits_per_sample</key>
      <value>8</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>file</key>
      <value>/home/mmullins/projects/stm32f4/stm32f4-experimentation/usb_audio_1152000_3.wav</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(1056, 364)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_wavfile_sink_0</value>
    </param>
    <param>
      <key>nchan</key>
      <value>1</value>
    </param>
    <param>
      <key>samp_rate</key>
      <value>audio_samp_rate</value>
    </param>
  </block>
  <block>
    <key>dc_blocker_xx</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(680, 220)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>dc_blocker_xx_0</value>
    </param>
    <param>
      <key>length</key>
      <value>32</value>
    </param>
    <param>
      <key>long_form</key>
      <value>True</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>type</key>
      <value>ff</value>
    </param>
  </block>
  <block>
    <key>low_pass_filter</key>
    <param>
      <key>beta</key>
      <value>6.76</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>cutoff_freq</key>
      <value>20e3</value>
    </param>
    <param>
      <key>decim</key>
      <value>samp_rate / audio_samp_rate</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>type</key>
      <value>fir_filter_fff</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(464, 180)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>gain</key>
      <value>1</value>
    </param>
    <param>
      <key>id</key>
      <value>low_pass_filter_0</value>
    </param>
    <param>
      <key>interp</key>
      <value>1</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>samp_rate</key>
      <value>samp_rate</value>
    </param>
    <param>
      <key>width</key>
      <value>100</value>
    </param>
    <param>
      <key>win</key>
      <value>firdes.WIN_HAMMING</value>
    </param>
  </block>
  <block>
    <key>qtgui_waterfall_sink_x</key>
    <param>
      <key>axislabels</key>
      <value>True</value>
    </param>
    <param>
      <key>bw</key>
      <value>audio_samp_rate</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>fc</key>
      <value>0</value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>fftsize</key>
      <value>8192</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(736, 436)</value>
    </param>
    <param>
      <key>gui_hint</key>
      <value></value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>grid</key>
      <value>False</value>
    </param>
    <param>
      <key>id</key>
      <value>qtgui_waterfall_sink_x_0</value>
    </param>
    <param>
      <key>int_max</key>
      <value>10</value>
    </param>
    <param>
      <key>int_min</key>
      <value>-140</value>
    </param>
    <param>
      <key>legend</key>
      <value>True</value>
    </param>
    <param>
      <key>alpha1</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color1</key>
      <value>0</value>
    </param>
    <param>
      <key>label1</key>
      <value></value>
    </param>
    <param>
      <key>alpha10</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color10</key>
      <value>0</value>
    </param>
    <param>
      <key>label10</key>
      <value></value>
    </param>
    <param>
      <key>alpha2</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color2</key>
      <value>0</value>
    </param>
    <param>
      <key>label2</key>
      <value></value>
    </param>
    <param>
      <key>alpha3</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color3</key>
      <value>0</value>
    </param>
    <param>
      <key>label3</key>
      <value></value>
    </param>
    <param>
      <key>alpha4</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color4</key>
      <value>0</value>
    </param>
    <param>
      <key>label4</key>
      <value></value>
    </param>
    <param>
      <key>alpha5</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color5</key>
      <value>0</value>
    </param>
    <param>
      <key>label5</key>
      <value></value>
    </param>
    <param>
      <key>alpha6</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color6</key>
      <value>0</value>
    </param>
    <param>
      <key>label6</key>
      <value></value>
    </param>
    <param>
      <key>alpha7</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color7</key>
      <value>0</value>
    </param>
    <param>
      <key>label7</key>
      <value></value>
    </param>
    <param>
      <key>alpha8</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color8</key>
      <value>0</value>
    </param>
    <param>
      <key>label8</key>
      <value></value>
    </param>
    <param>
      <key>alpha9</key>
      <value>1.0</value>
    </param>
    <param>
      <key>color9</key>
      <value>0</value>
    </param>
    <param>
      <key>label9</key>
      <value></value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>name</key>
      <value>""</value>
    </param>
    <param>
      <key>nconnections</key>
      <value>1</value>
    </param>
    <param>
      <key>showports</key>
      <value>True</value>
    </param>
    <param>
      <key>freqhalf</key>
      <value>False</value>
    </param>
    <param>
      <key>type</key>
      <value>float</value>
    </param>
    <param>
      <key>update_time</key>
      <value>0.10</value>
    </param>
    <param>
      <key>wintype</key>
      <value>firdes.WIN_BLACKMAN_hARRIS</value>
    </param>
  </block>
  <connection>
    <source_block_id>blocks_char_to_float_0</source_block_id>
    <sink_block_id>low_pass_filter_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>blocks_packed_to_unpacked_xx_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_multiply_const_vxx_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_multiply_const_vxx_0</source_block_id>
    <sink_block_id>blocks_wavfile_sink_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_packed_to_unpacked_xx_0</source_block_id>
    <sink_block_id>blocks_char_to_float_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>dc_blocker_xx_0</source_block_id>
    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>dc_blocker_xx_0</source_block_id>
    <sink_block_id>qtgui_waterfall_sink_x_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>low_pass_filter_0</source_block_id>
    <sink_block_id>dc_blocker_xx_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
</flow_graph>