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Tone Measurements (Multiple Tone Measurements) (G Dataflow)

Version:
    Last Modified: January 9, 2017

    Extracts tones from a signal and returns their frequency, amplitude, and phase.

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    export mode

    Source of the signal and spectrum to export.

    This input accepts an array of enums if signal is an array of waveforms.

    Name Description
    none Uses the fastest computation.
    input signal Exports the input signal only.
    detected signal Exports a multiple tone.
    residual signal Exports a signal minus the tone.

    Default: none

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    signal

    The input signal.

    This input supports the following data types:

    • Waveform
    • Complex double-precision, floating-point waveform
    • 1D array of waveforms
    • 1D array of complex double-precision, floating-point waveforms
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    threshold

    Minimum amplitude that each tone must exceed.

    This input accepts an array of double-precision floating-point numbers if signal is an array of waveforms.

    Default: 0.001

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    max number of tones

    Maximum number of tones that this node extracts. This input must be greater than 0.

    This input accepts an array of 32-bit signed integers if signal is an array of waveforms.

    Default: 4

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    sorting

    The sorting order of the tones that this node extracts.

    Name Description
    increasing frequency

    Sorts the tones by increasing frequency.

    decreasing amplitude

    Sorts the tones by decreasing amplitude.

    Default: increasing frequency

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    error in

    Error conditions that occur before this node runs. The node responds to this input according to standard error behavior.

    Default: No error

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    exported spectrum

    Spectrum of the exported signal.

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    f0

    Start frequency, in Hz, of the spectrum.

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    df

    Frequency resolution, in Hz, of the spectrum.

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    spectrum

    Computed spectrum.

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    exported signal

    Waveform of the exported signal.

    This output can return the following data types:

    • Waveform
    • Complex double-precision, floating-point waveform
    • 1D array of waveforms
    • 1D array of complex double-precision, floating-point waveforms
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    amplitude

    Peak amplitude of each detected tone.

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    frequency

    Frequency, in Hz, of each detected tone.

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    phase

    Phase, in degrees, of each detected tone.

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    error out

    Error information. The node produces this output according to standard error behavior.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: Not supported


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