PMID: 16612518Apr 14, 2006Paper

Analysis of fundamental frequency, jitter, shimmer and vocal intensity in children with phonological disorders

Brazilian Journal of Otorhinolaryngology
Haydée F WertznerLuciana Amaro

Abstract

Phonological Disorder is a disturbance of primary manifestation of undefined causes that makes speech become unintelligible. The analysis of vocal parameters becomes important in the process of diagnosis of this disorder, since voice disorders could interfere in the production of speech sounds. The objective of this study was to verify vocal characteristics related to the intensity and fundamental frequency--F0--and their disturbance indexes--jitter and shimmer--in children with phonological disorders. Clinical prospective with transversal cohort. There were 40 children, 20 of them with phonological disorders and 20 with no speech and language disturbances. Phonological exams with the ABFW infantile language test and spontaneous speech were applied. The Computer Speech Lab was used to record and perform acoustic analyses of the vowels /a/, /e/, /i/, through the vocal parameters: fundamental frequency, intensity, jitter and shimmer. F0--vowel /e/ was smaller, on average, in the Phonological Disorder Group and it was 126 Hz in the Control Group. To shimmer and jitter there was no evidence that the means of the Phonological Disorder Group were different from the ones of the Control Group (p= 0.191, p= 0.865, respectively). As for ...Continue Reading

Citations

Jul 13, 2017·The South African Journal of Communication Disorders. Die Suid-Afrikaanse Tydskrif Vir Kommunikasieafwykings·Anél BothaJeannie Van der Linde
Jan 17, 2019·Logopedics, Phoniatrics, Vocology·Angélique RemacleMarc de Bodt
Sep 1, 2021·The British Journal of Oral & Maxillofacial Surgery·M NeamatiB Barati

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