Acoustic discrimination of velar impairment in children.
Cepstral coefficients calculated out of a linear prediction have been used to discriminate two groups of 19 control children and 12 patients with velar impairment. French vowels /a/, /i/, /u/ had been studied using the cepstral coefficients. Vowels /i/ and /u/ appeared to be efficient to perform the separation on acoustic grounds. A 100% recognition score can be reached when the two vowels are considered together. Modifications of the cepstrums dealing with velar incompetence are also discussed. A way to make an automatic grading of the pathology is finally presented.
Plante
F
F
Sensory Physiology Department 'Hearing and Voice' (URA CNRS 1447), E. Herriot Hospital, Lyon, France.
Berger-Vachon
C
C
Kauffmann
I
I
D001184:Articulation Disorders / Q000145:classification / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D010700:Phonetics; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation; D013018:Sound Spectrography / Q000295:instrumentation; D013063:Speech Discrimination Tests / Q000295:instrumentation; D013065:Speech Intelligibility; D014681:Velopharyngeal Insufficiency / Q000145:classification / Q000175:diagnosis*