A review of the acoustic and linguistic properties of children's speech

In this paper, we review the acoustic and linguistic properties of children's speech for both read and spontaneous speech. First, the effect of developmental changes on the absolute values and variability of acoustic correlates is presented for read speech for children ages 6 and up. Then, verbal child-machine spontaneous interaction is reviewed and results from recent studies are presented. Age trends of acoustic, linguistic and interaction parameters are discussed, such as sentence duration, filled pauses, politeness and frustration markers, and modality usage. Some differences between child-machine and human-human interaction are pointed out. The implications for acoustic modeling, linguistic modeling and spoken dialogue systems design for children are discussed.

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