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

Table 2

Results expressed as efficiency ± confidence interval and Cohen’s Kappa Index using MFCCs and MS features.

Features	Original subset				Agreement subset
	Efficiency (%)		Efficiency (%)		Efficiency (%)		Efficiency (%)
	MFCC	54.5 ± 6.5	0.37	53.1 ± 6.5	0.51	75.9 ± 9.0	0.64	76.5 ± 9.0	0.64
MFCC + PCA	56.3 ± 6.5	0.39	52.2 ± 6.6	0.31	78.2 ± 8.7	0.67	74.1 ± 9.3	0.60
MFCC + LDA	45.5 ± 6.5	0.27	48.2 ± 6.6	0.29	65.5 ± 10.0	0.48	68.3 ± 9.9	0.50
MS	60.3 ± 6.4	0.45	54.9 ± 6.5	0.36	81.6 ± 8.1	0.72	76.5 ± 9.0	0.63
MS + PCA	58.5 ± 6.5	0.43	58.0 ± 6.5	0.41	79.3 ± 8.5	0.69	78.8 ± 8.7	0.68
MS + LDA	58.9 ± 6.4	0.44	59.8 ± 6.4	0.43	81.6 ± 8.1	0.72	83.5 ± 7.9	0.74