Reconstructs a signal with subband coefficients. Wire data to the path coef input to determine the polymorphic instance to use or manually select the instance.


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Inputs/Outputs

  • cu16.png source coefficients —

    source coefficients specifies the coefficients for reconstructing the time waveform.

  • c1ddbl.png path coef —

    path coef specifies the coefficients of the subband that the path input of the WA Arbitrary Path Decomposition VI defines.

  • ccclst.png residual info —

    residual info specifies the information about the complementary subbands at each level. The residual paths describe these complementary subbands. For example, when path is 101, the residual paths include path 0, path 11, and path 100. This VI uses the complementary subbands information for signal reconstruction.

  • c1ddbl.png coef —

    coef specifies the coefficients on the residual paths. For example, when path is 101, coef includes the coefficients on path 0, path 11, and path 100.

  • c1di32.png length —

    length specifies the length of the coefficients on the residual paths and the signal length. For example, when path is 101, length includes the signal length and the lengths on path 0, path 11, and path 100.

  • c1dstr.png residual path —

    residual path specifies the residual paths.

  • cu16.png wavelet —

    wavelet specifies the wavelet type of the discrete wavelet analysis. The default is db02. The options include two types: orthogonal (Haar, Daubechies (dbxx), Coiflets (coifx), Symmlets (symx)) and biorthogonal (Biorthogonal (biorx_x), including FBI (bior4_4 (FBI))), where x indicates the order of the wavelet.

  • cerrcodeclst.png error in (no error) —

    error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

  • ccclst.png synthesis filters —

    synthesis filters specifies the coefficients of the lowpass synthesis filters and the highpass synthesis filters for the wavelet you specify. If you specify a value for synthesis filters, this VI ignores the settings in the wavelet input. You can use the Wavelet Design Express VI to design the analysis filters and the corresponding synthesis filters.

  • c1ddbl.png lowpass —

    lowpass specifies the coefficients of the lowpass synthesis filter, which this VI uses to filter the interpolated approximation coefficients in the wavelet reconstruction.

  • c1ddbl.png highpass —

    highpass specifies the coefficients of the highpass synthesis filter, which this VI uses to filter the interpolated detail coefficients in the wavelet reconstruction.

  • i1ddbl.png signal —

    signal returns the reconstructed signal.

  • ierrcodeclst.png error out —

    error out contains error information. This output provides standard error out functionality.

    • Examples

    Refer to the Engine Knocking Detection VI in the labview\examples\Wavelet Analysis\WAApplications directory for an example of using the WA Arbitrary Path Reconstruction VI.