The Association between Depression Severity, Prosody, and Voice Acoustic Features in Women with Depression

Table 3

The comparison of acoustic parameters and duration of sentences between the depressed and nondepressed groups.

Acoustics and sentences		Sample size	Mean	SD	t-test	value
CPP^1	Patient	30	13.81	2.44	−12.36	≥0.001
	Healthy	30	25.22	4.42
F0^2	Patient	30	215.48	34.60	−1.15	0.25
	Healthy	30	205.78	30.33
SD F0^3	Patient	30	9.34	9.40	−0.94	0.35
	Healthy	30	6.75	11.70
Jitter	Patient	30	0.46	0.33	−0.23	0.81
	Healthy	30	0.44	0.21
Shimmer	Patient	30	3.74	2.82	0.73	0.46
	Healthy	30	4.23	2.23
HNR^4	Patient	30	21.21	4.90	−1.32	0.19
	Healthy	30	19.74	3.55
Interrogative sentence duration (sec^5)	Patient	30	1.01	0.19	−0.68	0.49
	Healthy	30	0.97	0.25
Declarative sentence duration (sec)	Patient	30	3.01	11.70	−1.06	0.29
	Healthy	30	0.73	0.14
First exclamatory sentence duration (sec)	Patient	30	1.94	0.44	−2.72	0.009
	Healthy	30	1.68	0.26
Second exclamatory sentence duration (sec)	Patient	30	1.26	0.26	−2.45	0.017
	Healthy	30	1.10	0.22

¹Cepstral peak prominence, ²fundamental frequency, ³standard deviation of fundamental frequency, ⁴harmonic-to-noise ratio, and ⁵seconds.