
Feature  Brief description  Feature  Brief description 

aF0  Basic pitch of A  oPPQ  Smoothing value around JITA of O 
aJITA  Mean ratio of change in pitch period of A  oF60_120_240_480  (energy of 60~120 Hz)/(energy of 240~480 Hz) of O 
aJITT  Percentage of JITA value of A  oF240_480_960_1920  (energy of 240~480 Hz)/(energy of 960~1920 Hz) of O 
aPPQ  Smoothing value around JITA of A  oF60_120_oF960_1920  (energy of 60~120 Hz)/(energy of 960~1920 Hz) of O 
aF60_120_F240_480  (energy of 60~120 Hz)/(energy of 240~480 Hz) of A  oF1  Formant of first in 4 frequency periods of O 
aF240_480_960_1920  (energy of 240~480 Hz)/(energy of 960~1920 Hz) of A  oF2  Formant of second in 4 frequency periods of O 
aF60_120_960_1920  (energy of 60~120 Hz)/(energy of 960~1920 Hz) of A  oF2_F1  Difference of frequencies (oF2F1) 
aF1  Formant of first in 4 frequency periods of A  uF0  Basic pitch of U 
aF2  Formant of second in 4 frequency periods of A  uJITA  Mean ratio of change in pitch period of U 
aF2_F1  aF2/F1  uJITT  Percentage of JITA value of U 
eF0  Basic pitch of E  uPPQ  Smoothing value around JITA of U 
eJITA  Mean ratio of change in pitch period of E  uF60_120_240_480  (energy of 60~120 Hz)/(energy of 240~480 Hz) of U 
eJITT  Percentage of JITA value of E  uF240_480_960_1920  (energy of 240~480 Hz)/(energy of 960~1920 Hz) of U 
ePPQ  Smoothing value around JITA of E  uF60_120_960_1920  (energy of 60~120 Hz)/(energy of 960~1920 Hz) of U 
eF60_120_240_480  (energy of 60~120 Hz)/(energy of 240~480 Hz) of E  uF1  Formant of first in 4 frequency periods of U 
eF240_480_960_1920  (energy of 240~480 Hz)/(energy of 960~1920 Hz) of E  uF2  Formant of second in 4 frequency periods of U 
eF60_120_960_1920  (energy of 60~120 Hz)/(energy of 960~1920 Hz) of E  uF2_F1  Difference of frequencies (uF2F1) 
eF1  Formant of first in 4 frequency periods of E  iF0_aF0  Difference of frequencies (iF0aF0) 
eF2  Formant of second in 4 frequency periods of E  uF0_oF0  Difference of frequencies (uF0oF0) 
eF2_F1  Difference of frequencies (eF2F1)  aMFCC4  The terms of Mel frequency cepstral coefficients of A 
iF0  Basic pitch of I  eMFCC4  The terms of Mel frequency cepstral coefficients of E 
iJITA  Mean ratio of change in pitch period of I  iMFCC4  The terms of Mel frequency cepstral coefficients of I 
iJITT  Percentage of JITA value of I  oMFCC4  The terms of Mel frequency cepstral coefficients of O 
iPPQ  Smoothing value around JITA of I  uMFCC4  The terms of Mel frequency cepstral coefficients of U 
iF60_120_240_480  (energy of 60~120 Hz)/(energy of 240~480 Hz) of I  CORR  Pearson correlation coefficients between F0 and intensity 
iF240_480_960_1920  (energy of 240~480 Hz)/(energy of 960~1920 Hz) of I  P50  50th percentile of F0 
iF60_120_960_1920  (energy of 60~120 Hz)/(energy of 960~1920 Hz) of I  I50  50th percentile of intensity 
iF1  Formant of first in 4 frequency periods of I  SF0  Mean pitch of sentence 
iF2  Formant of second in 4 frequency periods of I  SSTD  Standard deviation of mean pitch of sentence 
iF2_F1  Difference of frequencies (iF2F1)  SITS  Intensity average 
oF0  Basic pitch of O  SISTD  Standard deviation of intensity 
oJITA  Mean ratio of change in pitch period of O  SSPD  Time to read one sentence 
oJITT  Percentage of JITA value of O  Total  65 
