Dysphonic Voice Pattern Analysis of Patients in Parkinson’s Disease Using Minimum Interclass Probability Risk Feature Selection and Bagging Ensemble Learning Methods
Table 2
Voice perturbation and nonlinear dynamic parameters measured from the acoustic signals of 31 subjects [5, 7].
Abbreviations
Feature description
MDVP:F0 (Hz)
Average vocal fundamental frequency
MDVP:Fhi (Hz)
Maximum vocal fundamental frequency
MDVP:Flo (Hz)
Minimum vocal fundamental frequency
MDVP:Jitter(%)
MDVP jitter in percentage
MDVP:Jitter(Abs)
MDVP absolute jitter in ms
MDVP:RAP
MDVP relative amplitude perturbation
MDVP:PPQ
MDVP five-point period perturbation quotient
Jitter:DDP
Average absolute difference of differences between jitter cycles
MDVP:Shimmer
MDVP local shimmer
MDVP:Shimmer(dB)
MDVP local shimmer in dB
Shimmer:APQ3
Three-point amplitude perturbation quotient
Shimmer:APQ5
Five-point amplitude perturbation quotient
MDVP:APQ11
MDVP 11-point amplitude perturbation quotient
Shimmer:DDA
Average absolute differences between the amplitudes of consecutive periods
NHR
Noise-to-harmonics ratio
HNR
Harmonics-to-noise ratio
RPDE
Recurrence period density entropy measure
D2
Correlation dimension
DFA
Signal fractal scaling exponent of detrended fluctuation analysis
