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Importing and Exporting Information from the Graphical Interface

The tool lets you save the de-noised signal to disk. The toolbox creates a MAT-file in the current directory with a name of your choice.

To save the above de-noised signal, use the menu option FileSave De-noised Signal. A dialog box appears that lets you specify a directory and filename for storing the signal. Type the name dnoibloc. After saving the signal data to the file dnoibloc.mat, load the variables into your workspace:

Name
Size
Bytes
Class
dnoibloc
1x1024
8192
double array
thrParams
1x5
580
cell array
wname
1x3
6
char array

  1. The de-noised signal is given by dnoibloc. In addition, the parameters of the de-noising process are available. The wavelet name is contained in wname:

    and the level dependent thresholds are encoded in thrParams, which is a cell array of length 5 (the level of the decomposition). For i from 1 to 5, thrParams{i} contains the lower and upper bounds of the interval of thresholding and the threshold value (since interval dependent thresholds are allowed). For more information, see One-Dimensional Variance Adaptive Thresholding of Wavelet Coefficients.

    For example, for level 1,

    Here the lower bound is 1, the upper bound is 1024, and the threshold value is 4.1. The total time-interval is not segmented and the procedure does not use the interval dependent thresholds.


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