Michelsson K, Järvenpää A L, Rinne A
Early Hum Dev. 1983 Jul;8(2):141-9. doi: 10.1016/0378-3782(83)90070-1.
Sound spectrographic cry analysis was performed on 302 cries of 48 preterm infants born at 30-37 gestational weeks. The cries were recorded during the first week of life and thereafter weekly until the infants were discharged. The control series comprised 54 cries from 27 fullterm healthy infants. The results showed that the cries of the smallest prematures compared with the controls were shorter, more high-pitched, and included bi-phonation and glide more often. The cry characteristics changed with increasing conceptual age and the older the child the more the cry pattern resembled that of the fullterm. The cries of the preterm infants when they had reached 38 conceptual weeks were similar to those of newly born fullterm infants. The results indicate that the gestational age should be taken into consideration in cry analysis.
对48名孕30 - 37周出生的早产儿的302次哭声进行了声谱分析。哭声在出生后第一周记录，之后每周记录一次，直至婴儿出院。对照组包括27名足月健康婴儿的54次哭声。结果显示，与对照组相比，最小的早产儿哭声较短、音调较高，且双声和滑音出现频率更高。哭声特征随孕龄增加而变化，孩子年龄越大，哭声模式越接近足月儿。早产儿达到38周孕龄时的哭声与新出生足月儿的哭声相似。结果表明，在哭声分析中应考虑胎龄因素。
