Table 1. Semitone Values (ST) of Each Thai Tone, Length of Pause Values, Pause Frequency Values, and the Paired Sample T-Test Values in Depressed and Non-Depressed Teenagers

Variables	Mid Tone (ST)	Low Tone (ST)	Falling Tone (ST)	High Tone (ST)	Rising Tone (ST)	Length of Pause Value (milli-second)	Pause Frequency Value (times/minute)
Depressed Participants (1)
1	3.77	5.31	9.84	5.12	6.78	601.48	31
2	7.07	5.70	8.88	5.36	4.68	729.11	28
3	1.06	2.47	3.23	3.10	1.26	526.20	43
Mean	4.14	4.14	6.11	4.10	3.01	618.93	34
S.D.	3.09	2.48	3.06	3.31	2.19	0.42	-
Non-Depressed Participants (2)
1	4.07	4.50	6.14	2.33	3.33	392.23	15
2	2.14	1.74	5.50	4.74	2.89	487.00	20
3	11.16	6.42	9.12	6.40	3.07	507.96	26
Mean	5.89	4.18	7.20	4.55	3.30	462.39	20
S.D.	4.53	2.70	2.88	2.78	2.13	0.41	-
Paired Sample T-Test of (1) Comparing to (2)
	0.99	0.87	0.34	0.70	0.81	0.03	-