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 2 Features in the INTERSPEECH 2009 emotion challenge feature set

LLD (16*2)	Functionals (12)
(Δ) ZCR	Mean
(Δ) RMS energy	Standard deviation
(Δ) F0	Kurtosis, skewness
(Δ) HNR	Extremes: value, rel. position, range
(Δ) MFCC 1-12	Linear regression: offset, slope, MSE