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Acoustic features of normal-hearing pre-term infant cry
A T Cacace1, M P Robb, J H Saxman
1Department of Surgery, Albany Medical College, NY 12208, USA.
International Journal of Pediatric Otorhinolaryngology
|November 1, 1995
Summary
Infant cry acoustics reveal that respiratory support impacts vocalizations in pre-term infants. These cry features correlate with respiratory assistance duration and infant characteristics.
Area of Science:
- Neonatal Medicine
- Speech Science
- Bioacoustics
Background:
- Pre-term infants often require neonatal intensive care (NICU).
- Understanding infant vocalizations is crucial for assessing development.
- Significant hearing loss was ruled out in the study population.
Purpose of the Study:
- To characterize acoustic cry features in pre-term infants before NICU discharge.
- To compare these features with those of normal-hearing, full-term infants.
- To investigate links between cry acoustics and perinatal variables.
Main Methods:
- Acoustic analysis of expiratory cry vocalizations from 125 pre-term infants.
- Comparison with a cohort of normal-hearing, full-term infants.
- Correlation analysis with anthropometric, diagnostic, and treatment data.
Main Results:
- Cry duration significantly correlated with total days of respiratory assistance.
- Complex acoustic features (harmonic doubling, vibrato) were more frequent in infants receiving respiratory support.
- Harmonic doubling was also associated with infant weight and gestational age.
Conclusions:
- Respiratory support influences the acoustic properties of pre-term infant cries.
- Specific cry features may serve as indicators related to respiratory history and development.
- Further research is needed to explore these relationships and their clinical implications.