Features

Description

MDVP: Fo (Hz)

Average vocal fundamental frequency

MDVP: Fhi (Hz)

Maximum vocal fundamental frequency

MDVP: Flo (Hz)

Minimum vocal fundamental frequency

Jitter (%)

Jitter (Abs)

MDVP: RAP MDVP: PPQ Jitter: DDP

Several measures of variation in fundamental frequency

Shimmer Shimmer (dB)

Shimmer: APQ3 Shimmer: APQ5 MDVP: APQ Shimmer: DDA

Several measures of variation in amplitude

NHR HNR

Two measures of ratio of noise to tonal components in the voice

RPDE D 2

Two nonlinear dynamical complexity measures

DFA

Signal fractal scaling exponent

spread 1 spread 2 PPE

Three nonlinear measures of fundamental frequency variation