Paralinguistic singing attribute recognition using supervised machine learning for describing the classical tenor solo singing voice in vocal pedagogy

EURASIP Journal on Audio, Speech, and Music Processing

Table 1 Number of vocal segments in each class of each paralinguistic singing attribute in SVQTD

Attributes	C₁	C₂	C₃	C₄	C_num
Head resonance	101	804	2341	786	4
Chest resonance	191	967	2435	439	4
Open throat	2757	845	366	64	4
Roughness	3552	480	N/A	N/A	2
Vibrato	1052	2845	135	N/A	3
Front placement singing	1052	2845	135	N/A	3
Back placement singing	3157	724	151	N/A	3