| Signal Processing Technique | Extracted Feature | Nomenclature |
| RMS Profile | Minimum RMS Profile | Min RMS |
| Maximum RMS Profile | Max RMS | |
| Wavelet Transform | Maximum di module coefficient | Max abs di |
| Standard Deviation di coefficient | Std di | |
| Normalized Energy di coefficient | di Energy | |
| Maximum a9 module coefficient | Max abs a9 | |
| Standard Deviation a9 coefficient | Std a9 | |
| Normalized Energy a9 coefficient | a9 Energy |