Journal article

A Comparative Study of Two Acoustic Measures of Hypernasality

Adam P Vogel, Hasherah M Ibrahim, Sheena Reilly, Nicky Kilpatrick

JOURNAL OF SPEECH LANGUAGE AND HEARING RESEARCH | AMER SPEECH-LANGUAGE-HEARING ASSOC | Published : 2009

Abstract

PURPOSE: This study aimed to compare 2 quantitative acoustic measures of nasality in children with cleft lip and palate (CLP) and healthy controls using formalized perceptual assessment as a guide. METHOD: Fifty participants (23 children with CLP and 27 age- and gender-matched healthy controls) aged between 4 and 12 years produced a variety of high and low vowels that allowed perceptual ratings of nasal resonance severity as well as acoustic analysis of spectral changes. Two objective measures of nasality were used: 1/3 octave spectra analysis and the voice low tone high tone ratio. Each respective technique has been evaluated in previous research, and their potential as an effective means o..

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