GNU Radio World

Audio Tone Generator

A tone played through the computer's speakers, with live frequency and volume controls

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Blocks used

BlockModuleUsed
QT GUI RangeGNU Radio2
Audio SinkGNU Radio1
GUI LayoutGNU Radio1
QT GUI Time SinkGNU Radio1
Signal SourceGNU Radio1
VariableGNU Radio1

Flowgraph source

audio/audio_tone.grc
options:
    parameters:
        author: Claude
        comment: ''
        copyright: ''
        description: A tone played through the computer's speakers, with live frequency and volume controls
        generate_options: qt_gui
        id: Audio_Tone_Generator
        title: Audio Tone Generator
    states:
        coordinate: [10, 10]
        rotation: 0
        state: enabled
blocks:
-   name: samp_rate
    id: variable
    parameters:
        comment: ''
        value: '48000'
    states:
        coordinate: [590, 10]
        rotation: 0
        state: enabled
-   name: tone_frequency
    id: variable_qtgui_range
    parameters:
        comment: ''
        label: Tone frequency (Hz)
        min_len: '240'
        orient: QtCore.Qt.Horizontal
        rangeType: float
        start: '100'
        step: '10'
        stop: '2000'
        value: '440'
        widget: counter_slider
    states:
        coordinate: [760, 10]
        rotation: 0
        state: enabled
-   name: volume
    id: variable_qtgui_range
    parameters:
        comment: ''
        label: Volume
        min_len: '240'
        orient: QtCore.Qt.Horizontal
        rangeType: float
        start: '0'
        step: '0.01'
        stop: '1'
        value: '0.2'
        widget: counter_slider
    states:
        coordinate: [1030, 10]
        rotation: 0
        state: enabled
-   name: speakers
    id: audio_sink
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        device_name: ''
        num_inputs: '1'
        ok_to_block: 'True'
        samp_rate: samp_rate
    states:
        coordinate: [290, 230]
        rotation: 0
        state: enabled
-   name: tone
    id: analog_sig_source_x
    parameters:
        affinity: ''
        alias: ''
        amplitude: volume
        comment: ''
        frequency: tone_frequency
        maxoutbuf: '0'
        minoutbuf: '0'
        samp_rate: samp_rate
        type: float
        waveform: analog.GR_COS_WAVE
    states:
        coordinate: [10, 210]
        rotation: 0
        state: enabled
-   name: wasm_gui_layout_0
    id: wasm_gui_layout
    parameters:
        affinity: ''
        alias: ''
        columns: '12'
        comment: ''
        layout: '{}'
        row_height: '60'
    states:
        coordinate: [300, 10]
        rotation: 0
        state: enabled
-   name: waveform
    id: qtgui_time_sink_x
    parameters:
        affinity: ''
        alias: ''
        alpha1: '1'
        alpha10: '1'
        alpha2: '1'
        alpha3: '1'
        alpha4: '1'
        alpha5: '1'
        alpha6: '1'
        alpha7: '1'
        alpha8: '1'
        alpha9: '1'
        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'
        grid: 'True'
        label1: Tone
        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: 'False'
        marker1: '-1'
        marker10: '-1'
        marker2: '-1'
        marker3: '-1'
        marker4: '-1'
        marker5: '-1'
        marker6: '-1'
        marker7: '-1'
        marker8: '-1'
        marker9: '-1'
        name: What the speakers are playing
        nconnections: '1'
        samp_rate: samp_rate
        size: '1024'
        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'
        tr_mode: qtgui.TRIG_MODE_FREE
        tr_slope: qtgui.TRIG_SLOPE_POS
        tr_tag: ''
        type: float
        update_time: '0.1'
        width1: '1'
        width10: '1'
        width2: '1'
        width3: '1'
        width4: '1'
        width5: '1'
        width6: '1'
        width7: '1'
        width8: '1'
        width9: '1'
        ylabel: Amplitude
        ymax: '1.2'
        ymin: '-1.2'
        yunit: ''
    states:
        coordinate: [290, 330]
        rotation: 0
        state: enabled
connections:
- [tone, '0', speakers, '0']
- [tone, '0', waveform, '0']
metadata:
    file_format: 1
    grc_version: 3.11.0.0