Table 2. Spectral and Temporal Analysis of Human Infant Cry Sounds.
| Measure | Sex | Comparison | Cocaine | Polydrug |
| Initial F0 (Hz) | Male | 697.3±86.7 | 1010.0±115.3 | 851.9±102.3 |
| Female | 619.5±125.4 | 672.8±116.3 | 884.1±96.4 | |
| Peak F0 (Hz) | Male | 728.9±85.5 | 1204.9±113.7 | 952.6±100.9 |
| Female | 663.8±123.7 | 684.8±114.7 | 926.1±95.1 | |
| F0 SD (Hz) † | Male | 104.8±27.8 | 235.5±37.0 | 153.4±32.8 |
| Female | 70.0±40.2 | 81.0±37.3 | 125.2±30.9 | |
| F0 Amp (dB) | Male | 59.3±1.6 | 61.6±2.1 | 58.3±1.9 |
| Female | 58.1±2.3 | 51.2±2.2 | 58.9±1.8 | |
| Inter-Cry-Interval (s) | Male | 1.4±0.8 | 1.3±1.1 | 1.9±1.0 |
| Female | 1.1±1.2 | 5.9±1.1 | 2.5±0.9 | |
| Cry Expiration Duration (s) | Male | 1.3±0.1 | 1.2±0.1 | 1.4±0.1 |
| Female | 1.6±0.2 | 1.4±0.1 | 1.2±0.1 | |
| Number of Cry Expirations † | Male | 14.8±1.5 | 13.5±1.9 | 12.0±1.7 |
| Female | 12.4±2.1 | 7.9±2.0 | 13.7±1.6 | |
| Dysphonation | Male | 2.2±0.2 | 2.7±0.2 | 2.6±0.2 |
| Female | 2.6±0.2 | 2.1±0.2 | 2.1±0.2 |
Note: All values are Mean ± SEM. † denotes analyses conducted on log transformations.