Table 2.

Each vocal test and its related features after applying filter-based feature selection.

ID	Vocal test	Related features
1	Vowel “a”	None
2	Vowel “o”	24
3	Vowel “u”	None
4	Number 1	1, 2, 3, 4, 5, 24
5	Number 2	2, 9, 10
6	Number 3	17, 19, 23, 25, 26
7	Number 4	1, 2, 3, 4, 5, 10
8	Number 5	24
9	Number 6	None
10	Number 7	None
11	Number 8	9
12	Number 9	26
13	Number 10	None
14	Short sentence 1	None
15	Short sentence 2	25, 26
16	Short sentence 3	4, 10, 25, 26
17	Short sentence 4	1, 2, 3, 4, 5, 10, 26
18	Word 1	2
19	Word 2	None
20	Word 3	17, 19, 23, 25
21	Word 4	None
22	Word 5	None
23	Word 6	None
24	Word 7	None
25	Word 8	1, 2, 3, 4, 5, 6, 17, 19, 23, 25
26	Word 9	24