Computes the single-sided power spectral density (PSD) of a univariate time series with the periodogram, Welch, autoregressive (AR) modeling, autoregressive-moving average (ARMA) modeling, or multiple signal classification (MUSIC) method.


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Dialog Box Options

Inputs/Outputs

  • cmsdt.png Xt —

    Specifies the time series. Xt is available only when you select From terminal in Data Source.

  • cpath.png File path —

    Specifies the file path of the data you want to load. This input is available only when you select the From file option in the Data Source section.

  • cerrcodeclst.png error in (no error) —

    Describes error conditions that occur before this node runs.

  • ierrcodeclst.png error out —

    Contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces.

  • istr.png unit —

    Returns the selected engineering unit of the estimated power spectral density.

  • icclst.png PSD —

    Returns information about the single-sided power spectral density, such as the magnitude and the frequency increment.

  • idbl.png f0 —

    f0 is the lower boundary of the frequency range.

  • idbl.png df —

    df is the frequency increment.

  • i1ddbl.png Sx —

    magnitude is the estimated power spectrum in normalized dB scale. The size of magnitude is equal to num of power spectrum bins.