Recent Progress in Voice-Based Sasang Constitutional Medicine: Improving Stability of Diagnosis
Table 3
Standard deviations of feature values from the sentence and vowels.
Subject
1
2
3
4
5
6
7
8
9
10
Sentence features
MFCC1
0.290
1.287
0.535
0.414
0.333
0.317
0.432
0.269
0.395
0.245
MFCC2
0.292
0.358
0.270
0.407
0.356
0.353
0.363
0.391
0.264
0.290
MFCC3
0.325
0.597
0.302
0.350
0.635
0.413
0.511
0.205
0.313
0.259
MFCC4
0.246
0.200
0.223
0.434
0.286
0.180
0.448
0.322
0.260
0.139
MFCC5
0.451
0.320
0.352
0.423
0.479
0.309
0.708
0.470
0.288
0.280
MFCC6
0.213
0.292
0.199
0.227
0.258
0.240
0.428
0.523
0.329
0.160
MFCC7
0.336
0.287
0.428
0.266
0.341
0.294
0.311
0.278
0.262
0.307
MFCC8
0.340
0.346
0.257
0.289
0.269
0.293
0.303
0.347
0.258
0.204
MFCC9
0.268
0.399
0.279
0.521
0.374
0.307
0.480
0.420
0.362
0.211
MFCC10
0.359
0.279
0.284
0.461
0.387
0.412
0.381
0.485
0.286
0.193
MFCC11
0.251
0.334
0.304
0.412
0.375
0.411
0.432
0.410
0.251
0.235
MFCC12
0.329
0.380
0.178
0.325
0.590
0.398
0.669
0.278
0.265
0.313
Vowel features
aENG
0.069
0.878
0.208
0.417
0.394
0.129
0.912
0.244
1.549
1.659
aF1
0.634
0.336
0.453
0.380
0.282
0.552
0.489
0.652
0.366
0.346
aSHIM
0.848
1.030
0.875
1.167
1.094
1.094
2.843
2.195
1.448
0.749
eSHIM
1.127
1.397
0.986
1.555
0.873
1.120
2.870
3.048
1.393
0.541
iDTF0
5.234
7.824
1.775
9.167
3.757
4.080
10.320
6.106
9.598
6.307
iJITT
0.933
1.066
0.695
5.042
1.623
1.154
2.869
2.789
1.096
0.915
oDTF0
2.330
6.399
1.296
3.616
3.767
3.623
9.513
8.807
1.316
1.178
oPW
0.046
0.454
0.206
0.500
0.294
0.272
1.133
0.225
1.198
2.080
uF1
0.263
0.286
0.874
0.580
0.188
0.356
0.422
0.273
0.216
0.659
Vowel features, xENG (energy), xF1 (1st formant), xSHIM (shimmer), xDTF0 (average difference of pitch over the time interval), xJITT (jitter), and xPW (power) were used in the study of Do et al. [4] x ∈ {a, e, i, o, u}.
