Lobanov [@lobanov] | Using the Lobanov normalization functions | On points | On tracks | On DCT Coefficients | Nearey Normalization [@neareyPhoneticFeatureSystems1978] | Using the Nearey normalization functions | Delta F [@johnsonDFMethodVocal2020] | Using the DeltaF normalization functions | On DCT coefficients | Watt & Fabricious [@wattEvaluationTechniqueImproving2002] | Using the Watt & Fabricious normaliation functions | Bark Difference [@syrdalPerceptualModelVowel1986] | Using the Bark Difference normalization functions | References

Introduction to the problem | An example | Generalizing Normalization Procedures | Examples | $\Delta$F

Token IDs

A brief description | DCT functions in tidynorm | Getting average formant tracks | The DCT Basis

Initial look at the data | Getting density areas | Density Polygons | Polygon Data Frames | A single probability level | Multiple probability levels | Polygon Simple Features

Density polygons as simple features | Initial {sf} operations | Getting overlaps | Spatial filters | Spatial filter | Spatial join