Hypernasality (HP) is observed across voiced phonemes uttered by Cleft-Palate (CP) speakers with defective velopharyngeal (VP) opening. HP assessment using signal processing technique is challenging due to the variability of acoustic features across various conditions such as speakers, speaking style, speaking rate, severity of HP etc. Most of the study for hypernasality (HP) assessment is base...

Introduction. The objective of this investigation was to evaluate the reliability and validity of the NasalView system as a screening tool for hypernasality within the scope of a routine diagnostic procedure in cleft lip and palate patients. Material and Methods. In a collective of 95 patients with cleft and lip palate ranging from 4 to 25 years of age, hypernasality was exploited perceptually,...

The purpose of this presentation is to provide a progress report and preliminary data pertaining to a study designed to test the efficacy of continuous positive airway pressure (CPAP) therapy in reducing hypernasality.

Automatic hypernasality detection in children with Cleft Lip and Palate is classically performed by means of acoustic analysis; however, recent findings indicate that nonlinear dynamics features could be useful for this task. In order to continue deepening in this issue, in this paper the discriminant capability of 4 different nonlinear dynamics features along with a set of 6 entropy measuremen...

Purpose: to verify the association between central auditory skills and speech disorders related velopharyngeal dysfunction. Methods: forty-five children, with repaired non-syndromic cleft lip palate or only, aged 7-11 years old, were divided into three groups: G1 (n=15), children hypernasality, nasal air emission, compensatory articulations; G2 hypernasality but without G3 articulations. The me...

Speakers with velopharyngeal incompetence produce hypernasal speech across voiced elements. Acoustical study [1] on hypernasal speech and nasalized vowels of normal speakers revealed the fact that there is an additional formant frequency introduced in the low-frequency region, close to the first formant of the phonations /a/, /i/, and /u/. Based on this observation, in the current study, the fo...

Speakers with velopharyngeal incompetence, produce hypernasal speech across voiced elements. During the production of vowels, due to the defective velopharyngeal mechanism, oral cavity gets coupled with the nasal cavity. This coupling may introduce resonances of nasal cavity in the resulting vowel sound. In the present study, an attempt is made to convert pure vowels in to its nasalized counter...