Cul-de-sac hypernasality test with pattern recognition of LPC indices.
Folia Phoniatr Logop
; 48(1): 35-43, 1996.
Article
em En
| MEDLINE
| ID: mdl-8634726
ABSTRACT
Acoustic differences between samples of [i], [u], and [a] uttered in nose-open and nose-obstructed condition were studied in 6 women with isolated cleft palate and pathological nasalance scores and 9 healthy women with normal nasalance scores. The speech samples were depicted by 14-component vocal tract area feature vectors obtained by linear prediction and the differences between the samples were studied with a self-organized feature map. Each location on the map corresponds to a certain signal pattern, neighboring locations to similar patterns. The group of healthy subjects differed from the patients for vowels [i] and [u] but not for [a]. In the patients the nose obstruction induced a significant change in the location of these vowel samples on the map. In healthy subjects no such changes were detected. The results agreed with perceived differences between the subjects.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Distúrbios da Fala
/
Percepção da Fala
Tipo de estudo:
Etiology_studies
/
Prognostic_studies
Limite:
Adolescent
/
Adult
/
Female
/
Humans
Idioma:
En
Revista:
Folia Phoniatr Logop
Assunto da revista:
PATOLOGIA DA FALA E LINGUAGEM
Ano de publicação:
1996
Tipo de documento:
Article
País de afiliação:
Finlândia