Modulation Spectra Morphological Parameters: A New Method to Assess Voice Pathologies according to the GRBAS Scale

Table 3

Results expressed as efficiency ± confidence interval and Cohen's Kappa Index for MFCCs and MS features including and .

Features	Dimensionality reduction	Agreement subset
		Efficiency (%)		Efficiency (%)
		MFCC +	PCA	78.2 ± 8.7	0.67	74.1 ± 9.3	0.60
LDA	72.4 ± 9.4		0.58	58.8 ± 10.5	0.35
MFCC + +	PCA	80.5 ± 8.3	0.71	77.7 ± 8.8	0.66
	LDA	72.4 ± 9.4	0.58	62.4 ± 10.3	0.41
MS +	PCA	81.6 ± 8.1	0.73	80.0 ± 8.5	0.69
	LDA	80.5 ± 8.3	0.72	81.2 ± 8.3	0.71
MS + +	PCA	79.3 ± 8.5	0.63	80.0 ± 8.5	0.70
	LDA	80.5 ± 8.3	0.71	84.7 ± 7.7	0.76