Table 4.
Cumulative sum of the first five relative EOF weights for each vowel both before and after the voice breaks. The first values above a 97% threshold are underlined to define the number of significant modes needed for the reconstruction. Stot is the information entropy representing irregularity and broadness of the mode distribution for each case. The chest register in vowel ∕i∕ exhibits the broadest distribution and largest number of significant modes.
| EOF index | Vowel ∕i∕ | Vowel ∕ae∕ | ||||||
|---|---|---|---|---|---|---|---|---|
| Left | Right | Left | Right | |||||
| Falsetto (%) | Chest (%) | Falsetto (%) | Chest (%) | Falsetto (%) | Chest (%) | Falsetto (%) | Chest (%) | |
| 1 | 91.4 | 91.6 | 93.6 | 90.4 | 95.8 | 96.7 | 96.3 | 96.6 |
| 2 | 96.6 | 95.0 | 95.9 | 95.7 | 97.7 | 98.4 | 98.0 | 98.2 |
| 3 | 97.5 | 96.4 | 97.1 | 96.9 | 98.4 | 98.8 | 98.6 | 99.1 |
| 4 | 97.8 | 97.2 | 97.7 | 97.7 | 98.8 | 99.1 | 98.8 | 99.2 |
| 5 | 98.1 | 97.7 | 98.1 | 98.1 | 99.1 | 99.3 | 99.0 | 99.3 |
| Stot | 0.19 | 0.21 | 0.17 | 0.21 | 0.11 | 0.09 | 0.11 | 0.09 |