Validation of the newborn larynx modeling with aerodynamical experimental data.
BACKGROUND
Many authors have studied adult's larynx modelization, but the mechanisms of newborn's voice production have very rarely been investigated. After validating a numerical model with acoustic data, studies were performed on larynges of human fetuses in order to validate this model with aerodynamical experiments.


METHODS
Anatomical measurements were performed and a simplified numerical model was built using Fluent((R)) with the vocal folds in phonatory position. The results obtained are in good agreement with those obtained by laser Doppler velocimetry (LDV) and high-frame rate particle image velocimetry (HFR-PIV), on an experimental bench with excised human fetus larynges.


RESULTS
It appears that computing with first cry physiological parameters leads to a model which is close to those obtained in experiments with real organs.
Nicollas
R
R
Laboratoire de l'I.U.S.T.I., U.M.R. 6595 C.N.R.S.-Université de Provence, Technopôle de Château-Gombert, 5 Rue Enrico Fermi 13453 Marseille cedex 13, France. richard.nicollas@ap-hm.fr
Giordano
J
J
Garrel
R
R
Medale
M
M
Caminat
P
P
Giovanni
A
A
Ouaknine
M
M
Triglia
J M
JM
D000388:Air; D005333:Fetus / Q000033:anatomy & histology / Q000502:physiology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007830:Larynx / Q000033:anatomy & histology / Q000502:physiology*; D008954:Models, Biological; D011312:Pressure