lss = 
  labeledSignalSet with properties:

             Source: {2x1 cell}
         NumMembers: 2
    TimeInformation: "sampleRate"
         SampleRate: 4000
             Labels: [2x3 table]
        Description: "Characterize wave song regions"

 Use labelDefinitionsHierarchy to see a list of labels and sublabels.
 Use setLabelValue to add data to the set.

ans = 
  signalLabelDefinition with properties:

             Name: "WhaleType"
        LabelType: "attribute"
    LabelDataType: "categorical"
       Categories: [3x1 string]
     DefaultValue: []
        Sublabels: [0x0 signalLabelDefinition]
              Tag: ""
      Description: "Whale type"

 Use labeledSignalSet to create a labeled signal set.

ans = 
  signalLabelDefinition with properties:

                  Name: "MoanRegions"
             LabelType: "roi"
         LabelDataType: "logical"
    ValidationFunction: []
     ROILimitsDataType: "double"
          DefaultValue: []
             Sublabels: [0x0 signalLabelDefinition]
                   Tag: ""
           Description: "Regions where moans occur"

 Use labeledSignalSet to create a labeled signal set.

ans = 
  signalLabelDefinition with properties:

                  Name: "TrillRegions"
             LabelType: "roi"
         LabelDataType: "logical"
    ValidationFunction: []
     ROILimitsDataType: "double"
          DefaultValue: []
             Sublabels: [1x1 signalLabelDefinition]
                   Tag: ""
           Description: "Regions where trills occur"

 Use labeledSignalSet to create a labeled signal set.