Modeling of Child Stress-State Identification Based on Biometric Information in Mobile Environment

Table 2

Representative sound features.

No	Features
1	Power spectrum
2	Magnitude spectrum
3	Magnitude spectrum peaks
4	Spectral variability
5	Spectral centroid
6	Partial-based spectral centroid
7	Partial-based spectral smoothness
8	Compactness
9	Spectral roll-off point
10	Spectral flux
11	Partial-based spectral flux
12	Method of method
13	Area method of moments
14	Mel frequency cepstral of coefficient (MFCC)
15	Area method of moments of MFCCs
16	Zero crossings
17	Root mean square
18	Relative difference function
19	Fraction of low-energy frames
20	Linear predictive coding
21	Beat histogram
22	Strongest beat
23	Beat sum
24	Strength of strongest beat
25	Strongest frequency via zero crossings
26	Strongest frequency via spectral centroid
27	Strongest frequency via FFT maximum