Voice Onset Time for Turkish Stop Consonants in Adult Cochlear Implanted Patients

Abstract

The voice onset time is a temporal acoustic parameter defined as the time between the release of the oral constriction for plosive production and the onset of vocal fold vibrations. Hearing impairment is one of the factors that can effect the magnitude of voice onset time. Since voice onset time is a useful, noninvasive method for documenting the articulatory-phonatory aspects of vocal training during speech, we investigated voice onset time values for Turkish stop consonants in adult cochlear implanted patients in order to clarify the effect of CI and sequential hearing rehabilitation over voice onset time values. The CI patients were divided into two groups according to duration of CI usage. We looked for relations between results of the study and average voice onset time values in Turkish language for adults. Mean VOT values for for both males and females in the first and second group are shown in Tables 1, 2, 3, and 4. Most syllables both in males and females statistically significant differ from average VOT values, e.g. They did not reach to normal hearing adults level. These acoustic results indicated that VOT may be an effective measure for examining the effect of cochlear implantation over the articulatory accuracy. As far as we know, this is the first publication using voice onset time values for the efficiency of cochlear implantation in adult patients.

Evaluation of the articulatory characteristics of voice in cochlear implanted children

“…[4,5] VOT values are different between languages because of their differences in structure due to originating from different language families. [4,7] There are few studies which reported about VOT in cochlear implant users. Most of them have focused on English language analysis.…”

“…[7] The speaking and understanding skills continued to increase with the use of the implant for approximately four years after the cochlear implantation operation in children with prelingual hearing loss. [10][11][12][13][14][15][16][17][18] For this reason, the early diagnosis of a hearing loss is very important for the child's auditory rehabilitation.…”

Investigation of Vot as an Acoustic Feature of Consonants in Stressed Syllable in Adults With Down Syndrome

“…Ryalls, Gustafson, & Santini (1999) illustrated that VOT of voiceless stops in dysphagia impairments were shorter than ones in normal participants while VOT of voiced stops were longer than ones compared with normal participants. Lane & Perkell (2005) Dalgic et al (2015) argued that mean VOT of cochlear impairments significantly differed from that in normal ones, and the findings showed that this difference in cochlear impairments was higher than that in normal participants.…”

“…VOT is a time between the release of oral construction for the production of plosives and the onset of vocal folds vibrations (Dalgic, Kandogan, & Aksoy, 2015;Lisker & Abramson, 1964). There are some factors which affect VOT; one of them is the gender of the speakers (Lisker & Abramson, 1964).…”

Early Detection of Parkinson’s and Alzheimer’s Diseases using the VOT_Mean Feature

“…In [41], VOT measurements were studied in the case of non-voiced plosive sounds [p, t, k] for five bilingual children (English and BP) aged 8-9 years, reporting the following VOT values: for English, [p]=40ms, [k]=65ms, and [t]=56ms, while for BP [p]=48ms, [k]=70ms, and [t]=60ms. A few studies were conducted using VOT measurements in Turkish [42][43][44], while the VOTs in Lebanese Arabic were shorter compared to other languages [45].…”