Formant frequencies in children with normal hearing and profound or severe hearing impairments

Ozbič, Martina (author), Kogovšek, Damjana (author), Umanski, Daniil (author)

Namen raziskave je analiza razlik v formantni produkciji (F1 in F2) 33 otrok, starih od 5 do 9 let, ki so polnočutni (11 otrok), naglušni (9 otrok, boljše uho=68,53, SD=18.90) ali gluhi (13 otrok, boljše uho=106.70, SD=4.82). Sedem samoglasnikov slovenskega jezika (polglasnik smo opustili) smo analizirali iz zvočnih posnetkov imenovanja ali branja besed artikulacijskega testa. Vsi prvi in drugi formanti sprednjih zgornjih ter zadnjih samoglasnikov otrok z izgubo sluha se statistično pomembno razlikujejo od formantov polnočutnih otrok. Rezultati opozarjajo na vlogo slušne povratne zanke za samoglasniško produkcijo. Podatke lahko uporabimo pri logopedski terapiji ob vidnem spremljanju samoglasniškega izgovora ter v zvočnih aplikacijah, ter opozarjajo na večje upoštevanje visokih frekvenc pri akustičnem procesiranju.

• Language: Unknown
• Keywords: naglušni
• Work type: Not categorized
• Organization: PEF - Faculty of Education
• Year: 2010
• Number of pages: 89-94
• PID: 20.500.12556/RUL-68213
• Publication date in RUL: 10.07.2015

Secondary language

• Language: Unknown

Abstract

The purpose of the present study was to discover the differences in vowel formant production (F1 and F2) in 33 children, aged 5-9 years, with a different hearing status (11 children with normal hearing (NH), 9 children with prelingual severe (SHI) (mean of hearing loss in dBHL, better ear=68,53, SD=18.90) and by 13 children with prelingual profound hearing impairment (PHI) (mean of hearing loss in dBHL, better ear=106.70, SD=4.82). Formant frequencies associated with 7 Slovenian vowels (/i/, closed /e/, open /e/, /a/, open /o/, closed /o/, /u/), produced during naming pictures or reading words from the Slovenian articulation test were obtained. All first formant and second formant frequencies of high front and back vowels of the speakers with hearing impairment were significantly different from those of the normal-hearing children. The findings suggest the role of the auditory feedback in vowel production in speakers with hearing impairment. The knowledge may be used in speech therapy in visual monitoring of vowel production in HI speakers and in acoustical engineering, to give more stress on high frequencies during acoustic processing.

• Keywords: aurally handicapped