Nonlinear Dynamic Feature Extraction Based on Phase Space Reconstruction for the Classification of Speech and Emotion

Table 5

Confusion matrix for the CASIA emotional speech recognition for four feature types.

Prosody		Detected emotion
Emotional state		Happy	Sadness	Neutral	Anger	Fear
True emotion	Happy	152	22	19	1	6
	Sadness	29	93	18	19	41
	Neutral	20	21	113	29	17
	Anger	7	24	34	112	23
	Fear	12	51	26	19	92
NLD-1
Emotional state		Happy	Sadness	Neutral	Anger	Fear
True emotion	Happy	137	12	34	17	0
	Sadness	35	90	22	18	35
	Neutral	13	11	128	22	26
	Anger	11	20	19	124	30
	Fear	0	49	29	24	98
MFCC
Emotional state		Happy	Sadness	Neutral	Anger	Fear
True emotion	Happy	137	4	48	8	3
	Sadness	17	90	7	10	76
	Neutral	49	10	121	16	4
	Anger	11	12	18	148	11
	Fear	3	75	7	19	96
NLD-2
Emotional state		Happy	Sadness	Neutral	Anger	Fear
True emotion	Happy	147	12	30	11	0
	Sadness	39	95	21	16	55
	Neutral	11	14	118	20	37
	Anger	8	19	21	116	36
	Fear	0	51	14	27	108