diff_audio_sounder.grc

options:
  parameters:
    author: "Marcus M\xFCller"
    category: '[GRC Hier Blocks]'
    cmake_opt: ''
    comment: ''
    copyright: '2020'
    description: ''
    gen_cmake: 'On'
    gen_linking: dynamic
    generate_options: qt_gui
    hier_block_src_path: '.:'
    id: diff_audio_channel_sounder
    max_nouts: '0'
    output_language: python
    placement: (0,0)
    qt_qss_theme: ''
    realtime_scheduling: ''
    run: 'True'
    run_command: '{python} -u {filename}'
    run_options: prompt
    sizing_mode: fixed
    thread_safe_setters: ''
    title: Differential audio sounder
    window_size: ''
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [8, 12.0]
    rotation: 0
    state: enabled

blocks:
- name: ampl
  id: variable_qtgui_range
  parameters:
    comment: ''
    gui_hint: '[0,0,1,1]'
    label: Amplitude [dBmax]
    min_len: '200'
    orient: Qt.Horizontal
    rangeType: float
    start: '-30'
    step: '0.5'
    stop: '0'
    value: '-10'
    widget: counter_slider
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [376, 12.0]
    rotation: 0
    state: true
- name: analog_noise_source_x_0
  id: analog_noise_source_x
  parameters:
    affinity: ''
    alias: ''
    amp: 10**(ampl/20)
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    noise_type: analog.GR_GAUSSIAN
    seed: '0'
    type: float
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [8, 164.0]
    rotation: 0
    state: true
- name: audio_sink_0
  id: audio_sink
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    device_name: ''
    num_inputs: '1'
    ok_to_block: 'True'
    samp_rate: f_sample
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [496, 180.0]
    rotation: 0
    state: true
- name: audio_source_0
  id: audio_source
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    device_name: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    num_outputs: '2'
    ok_to_block: 'True'
    samp_rate: f_sample
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [8, 448.0]
    rotation: 0
    state: true
- name: blocks_complex_to_mag_squared_0
  id: blocks_complex_to_mag_squared
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    vlen: fftlen
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [584, 308.0]
    rotation: 0
    state: true
- name: blocks_complex_to_mag_squared_0_0
  id: blocks_complex_to_mag_squared
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    vlen: fftlen
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [584, 612.0]
    rotation: 0
    state: true
- name: blocks_moving_average_xx_0
  id: blocks_moving_average_xx
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    length: '40'
    max_iter: '4000'
    maxoutbuf: '0'
    minoutbuf: '0'
    scale: 1.0/40/fftlen
    type: float
    vlen: fftlen
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [760, 284.0]
    rotation: 0
    state: true
- name: blocks_moving_average_xx_0_0
  id: blocks_moving_average_xx
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    length: '40'
    max_iter: '4000'
    maxoutbuf: '0'
    minoutbuf: '0'
    scale: 1.0/40/fftlen
    type: float
    vlen: fftlen
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [760, 588.0]
    rotation: 0
    state: true
- name: blocks_nlog10_ff_0
  id: blocks_nlog10_ff
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    k: '0'
    maxoutbuf: '0'
    minoutbuf: '0'
    n: '10'
    vlen: fftlen
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [960, 292.0]
    rotation: 0
    state: true
- name: blocks_nlog10_ff_0_0
  id: blocks_nlog10_ff
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    k: '0'
    maxoutbuf: '0'
    minoutbuf: '0'
    n: '10'
    vlen: fftlen
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [960, 596.0]
    rotation: 0
    state: true
- name: blocks_stream_to_vector_0
  id: blocks_stream_to_vector
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    num_items: fftlen
    type: float
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [200, 312.0]
    rotation: 0
    state: true
- name: blocks_stream_to_vector_0_0
  id: blocks_stream_to_vector
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    num_items: fftlen
    type: float
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [200, 616.0]
    rotation: 0
    state: true
- name: blocks_sub_xx_0
  id: blocks_sub_xx
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    num_inputs: '2'
    type: float
    vlen: fftlen
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [952, 480.0]
    rotation: 180
    state: true
- name: f_sample
  id: parameter
  parameters:
    alias: ''
    comment: ''
    hide: none
    label: Sample Rate (44100 Hz, 48000 Hz...)
    short_id: s
    type: intx
    value: '44100'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [184, 12.0]
    rotation: 0
    state: true
- name: fft_vxx_0
  id: fft_vxx
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    fft_size: fftlen
    forward: 'True'
    maxoutbuf: '0'
    minoutbuf: '0'
    nthreads: '1'
    shift: 'True'
    type: float
    window: window.blackmanharris(8192)
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [360, 284.0]
    rotation: 0
    state: true
- name: fft_vxx_0_0
  id: fft_vxx
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    fft_size: fftlen
    forward: 'True'
    maxoutbuf: '0'
    minoutbuf: '0'
    nthreads: '1'
    shift: 'True'
    type: float
    window: window.blackmanharris(8192)
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [360, 588.0]
    rotation: 0
    state: true
- name: fftlen
  id: parameter
  parameters:
    alias: ''
    comment: ''
    hide: none
    label: FFT length
    short_id: l
    type: intx
    value: '8192'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [544, 12.0]
    rotation: 0
    state: true
- name: low_pass_filter_0
  id: low_pass_filter
  parameters:
    affinity: ''
    alias: ''
    beta: '6.76'
    comment: ''
    cutoff_freq: 5e3
    decim: '1'
    gain: '1'
    interp: '1'
    maxoutbuf: '0'
    minoutbuf: '0'
    samp_rate: f_sample
    type: fir_filter_fff
    width: 0.5e3
    win: firdes.WIN_HAMMING
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [240, 132.0]
    rotation: 0
    state: true
- name: qtgui_freq_sink_x_0
  id: qtgui_freq_sink_x
  parameters:
    affinity: ''
    alias: ''
    alpha1: '0.5'
    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: '0.05'
    axislabels: 'True'
    bw: f_sample
    color1: '"dark green"'
    color10: '"dark blue"'
    color2: '"dark green"'
    color3: '"green"'
    color4: '"black"'
    color5: '"cyan"'
    color6: '"magenta"'
    color7: '"yellow"'
    color8: '"dark red"'
    color9: '"dark green"'
    comment: ''
    ctrlpanel: 'False'
    fc: '0'
    fftsize: '8192'
    freqhalf: 'False'
    grid: 'True'
    gui_hint: '[1,0,8,1]'
    label: Relative Gain
    label1: Device under test
    label10: ''''''
    label2: Loopback Cable
    label3: ''''''
    label4: ''''''
    label5: ''''''
    label6: ''''''
    label7: ''''''
    label8: ''''''
    label9: ''''''
    legend: 'True'
    maxoutbuf: '0'
    minoutbuf: '0'
    name: '"Spectrum"'
    nconnections: '2'
    showports: 'False'
    tr_chan: '0'
    tr_level: '0.0'
    tr_mode: qtgui.TRIG_MODE_FREE
    tr_tag: '""'
    type: float
    units: dB
    update_time: '0.05'
    width1: '2'
    width10: '1'
    width2: '2'
    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: [360, 448.0]
    rotation: 0
    state: disabled
- name: qtgui_vector_sink_f_0
  id: qtgui_vector_sink_f
  parameters:
    affinity: ''
    alias: ''
    alpha1: '0.7'
    alpha10: '1.0'
    alpha2: '0.7'
    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'
    color1: '"dark green"'
    color10: '"dark blue"'
    color2: '"dark blue"'
    color3: '"blue"'
    color4: '"black"'
    color5: '"cyan"'
    color6: '"magenta"'
    color7: '"yellow"'
    color8: '"dark red"'
    color9: '"dark green"'
    comment: ''
    grid: 'False'
    gui_hint: '[10,0,8,1]'
    label1: Device under test
    label10: ''
    label2: Loopback cab le
    label3: normalized spectrum
    label4: ''
    label5: ''
    label6: ''
    label7: ''
    label8: ''
    label9: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    name: '""'
    nconnections: '3'
    ref_level: '0'
    showports: 'False'
    update_time: '0.10'
    vlen: fftlen
    width1: '1'
    width10: '1'
    width2: '1'
    width3: '1'
    width4: '1'
    width5: '1'
    width6: '1'
    width7: '1'
    width8: '1'
    width9: '1'
    x_axis_label: '"Frequency [kHz]'
    x_start: '0'
    x_step: 1e-3*f_sample/fftlen
    x_units: '""'
    y_axis_label: '"y-Axis"'
    y_units: '""'
    ymax: '30'
    ymin: '-65'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [736, 412.0]
    rotation: 180
    state: true

connections:
- [analog_noise_source_x_0, '0', low_pass_filter_0, '0']
- [audio_source_0, '0', blocks_stream_to_vector_0, '0']
- [audio_source_0, '0', qtgui_freq_sink_x_0, '0']
- [audio_source_0, '1', blocks_stream_to_vector_0_0, '0']
- [audio_source_0, '1', qtgui_freq_sink_x_0, '1']
- [blocks_complex_to_mag_squared_0, '0', blocks_moving_average_xx_0, '0']
- [blocks_complex_to_mag_squared_0_0, '0', blocks_moving_average_xx_0_0, '0']
- [blocks_moving_average_xx_0, '0', blocks_nlog10_ff_0, '0']
- [blocks_moving_average_xx_0_0, '0', blocks_nlog10_ff_0_0, '0']
- [blocks_nlog10_ff_0, '0', blocks_sub_xx_0, '0']
- [blocks_nlog10_ff_0, '0', qtgui_vector_sink_f_0, '0']
- [blocks_nlog10_ff_0_0, '0', blocks_sub_xx_0, '1']
- [blocks_nlog10_ff_0_0, '0', qtgui_vector_sink_f_0, '1']
- [blocks_stream_to_vector_0, '0', fft_vxx_0, '0']
- [blocks_stream_to_vector_0_0, '0', fft_vxx_0_0, '0']
- [blocks_sub_xx_0, '0', qtgui_vector_sink_f_0, '2']
- [fft_vxx_0, '0', blocks_complex_to_mag_squared_0, '0']
- [fft_vxx_0_0, '0', blocks_complex_to_mag_squared_0_0, '0']
- [low_pass_filter_0, '0', audio_sink_0, '0']

metadata:
  file_format: 1

diff_audio_sounder.svg