Evidence-Based Complementary and Alternative Medicine / 2013 / Article / Tab 1

Research Article

A Novel Method for Classifying Body Mass Index on the Basis of Speech Signals for Future Clinical Applications: A Pilot Study

Table 1

All features used in this study and brief descriptions.

FeatureBrief descriptionFeatureBrief description

aF0Basic pitch of AoPPQSmoothing value around JITA of O
aJITAMean ratio of change in pitch period of AoF60_120_240_480(energy of 60~120 Hz)/(energy of 240~480 Hz) of O
aJITTPercentage of JITA value of AoF240_480_960_1920(energy of 240~480 Hz)/(energy of 960~1920 Hz) of O
aPPQSmoothing value around JITA of AoF60_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 AoF1Formant of first in 4 frequency periods of O
aF240_480_960_1920(energy of 240~480 Hz)/(energy of 960~1920 Hz) of AoF2Formant of second in 4 frequency periods of O
aF60_120_960_1920(energy of 60~120 Hz)/(energy of 960~1920 Hz) of AoF2_F1Difference of frequencies (oF2-F1)
aF1Formant of first in 4 frequency periods of AuF0Basic pitch of U
aF2Formant of second in 4 frequency periods of AuJITAMean ratio of change in pitch period of U
aF2_F1aF2/F1uJITTPercentage of JITA value of U
eF0Basic pitch of EuPPQSmoothing value around JITA of U
eJITAMean ratio of change in pitch period of EuF60_120_240_480(energy of 60~120 Hz)/(energy of 240~480 Hz) of U
eJITTPercentage of JITA value of EuF240_480_960_1920(energy of 240~480 Hz)/(energy of 960~1920 Hz) of U
ePPQSmoothing value around JITA of EuF60_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 EuF1Formant of first in 4 frequency periods of U
eF240_480_960_1920(energy of 240~480 Hz)/(energy of 960~1920 Hz) of EuF2Formant of second in 4 frequency periods of U
eF60_120_960_1920(energy of 60~120 Hz)/(energy of 960~1920 Hz) of EuF2_F1Difference of frequencies (uF2-F1)
eF1Formant of first in 4 frequency periods of EiF0_aF0Difference of frequencies (iF0-aF0)
eF2Formant of second in 4 frequency periods of EuF0_oF0Difference of frequencies (uF0-oF0)
eF2_F1Difference of frequencies (eF2-F1)aMFCC4The terms of Mel frequency cepstral coefficients of A
iF0Basic pitch of IeMFCC4The terms of Mel frequency cepstral coefficients of E
iJITAMean ratio of change in pitch period of IiMFCC4The terms of Mel frequency cepstral coefficients of I
iJITTPercentage of JITA value of IoMFCC4The terms of Mel frequency cepstral coefficients of O
iPPQSmoothing value around JITA of IuMFCC4The terms of Mel frequency cepstral coefficients of U
iF60_120_240_480(energy of 60~120 Hz)/(energy of 240~480 Hz) of ICORRPearson correlation coefficients between F0 and intensity
iF240_480_960_1920(energy of 240~480 Hz)/(energy of 960~1920 Hz) of IP5050th percentile of F0
iF60_120_960_1920(energy of 60~120 Hz)/(energy of 960~1920 Hz) of II5050th percentile of intensity
iF1Formant of first in 4 frequency periods of ISF0Mean pitch of sentence
iF2Formant of second in 4 frequency periods of ISSTDStandard deviation of mean pitch of sentence
iF2_F1Difference of frequencies (iF2-F1)SITSIntensity average
oF0Basic pitch of OSISTDStandard deviation of intensity
oJITAMean ratio of change in pitch period of OSSPDTime to read one sentence
oJITTPercentage of JITA value of OTotal65