Table 1.
Average (SD) vowel-, consonant-, word-, and phrase-classification accuracies (%) across participants, using single sensors.
| Sensor | Vowel classification | Consonant classification | Word classification | Phrase classification |
|---|---|---|---|---|
| T1 | 81.62 (8.82) | 80.82 (8.10) | 89.98 (3.47) | 91.82 (3.66) |
| T2 | 84.57 (7.83) | 74.79 (13.48) | 88.10 (6.39) | 90.83 (5.36) |
| T3 | 83.56 (7.35) | 75.10 (13.35) | 81.99 (6.66) | 89.82 (6.49) |
| T4 | 85.59 (6.00) | 80.16 (11.16) | 89.61 (5.57) | 93.17 (3.92) |
| UL | 62.38 (9.95) | 53.96 (12.65) | 74.34 (8.07) | 95.62 (2.63) |
| LL | 73.29 (8.71) | 66.55 (12.39) | 84.51 (6.71) | 95.90 (2.23) |
Note. UL = upper lip; LL = lower lip; T1 = vicinity between the tongue apex and tongue blade; T2 = tongue-blade back; T3 = tongue-body front; T4 = tongue-body back. The highest accuracy in each category (column) is shown in bold.