Table 2.
Means and standard errors (parentheses) of sibilant spectral moments after down-sampling audio to 24 kHz.
| Sex | Phoneme | Sibilant feature averages (down-sampled) |
||||
|---|---|---|---|---|---|---|
| Spectral mean (M1) | Spectral variance (M2) | Skewness (M3) | Kurtosis (M4) | Peak frequency | ||
| Female | /s/ | 8680 Hz | 986 kHz | −1.242 | 0.402 | 9048 Hz |
| (111) | (40) | (0.18) | (0.80) | (298) | ||
| /ʃ/ | 5425 Hz | 3156 kHz | 0.656 | 0.923 | 3758 Hz | |
| (94) | (266) | (0.07) | (0.10) | (157) | ||
| Male | /s/ | 7261 Hz | 2326 kHz | −0.040 | 0.801 | 6360 Hz |
| (280) | (225) | (0.28) | (0.40) | 496 Hz | ||
| /ʃ/ | 4532 Hz | 3485 kHz | 0.923 | −0.016 | 2772 Hz | |
| (196) | (392) | (0.16) | (0.26) | 103 Hz | ||