Diferenças na produção de foco prosódico contrastivo na fala de adultos e de crianças com aquisição fonológica típica e atípica do Português Brasileiro

The goal of this article is to characterize acoustically and compare prosodic focus marking in speech of adults, children under typical language development and children diagnosed with phonological disorders. Speech samples were obtained from an experiment designed to elicit sentences with contrastive focus and neutral sentences. Acoustical analysis of fundamental frequency, duration and intensity was performed on the sentences produced by each participant’s groups. The results show that groups performed differently in marking contrastive focus by using the three phonetic parameters and suggest that children with phonological disorders may present instabilities in the prosodic plan.