An acoustic and perceptual study of initial stops produced by profoundly hearing impaired adolescents

Abstract

This study investigated the role of Voice Onset Time (VOT) as perceptual cue to the aspiration contrast of Cantonese initial stops produced by adolescent profoundly hearing impaired speakers. Speakers with normal hearing signalled the aspiration contrast through VOT differences. Hearing impaired speakers produced initial stops with no significant VOT differences between aspirated and unaspirated stops; the accuracy of perception were above chance level for unaspirated stops but were below chance level for aspirated stops. Discriminant analysis conducted on data from a perceptual task showed that listeners with normal hearing relied on VOT cue for aspiration contrast of initial stops produced by control speakers. By contrast, stops produced by the hearing impaired speakers were not distinguished by listeners on the basis of VOT in that listeners were able to rely on VOT as a perceptual cue only to unaspirated stops, but not to aspirated stops.

Acoustic characteristics of vowels and plosives/affricates of Mandarin-speaking hearing-impaired children

“…For children with better hearing, their intelligibility is higher. Khouw and Ciocca (2007) studied the voice onset time of plosives of 10 Cantonese-speaking hearing-impaired adolescents and found no significant difference between the voice onset time of aspirated and unaspirated plosives. As temporal features cannot directly reflect the correctness of the plosives/affricates production, the occurrences of spike production will be examined instead in our studies later.…”

VOT y VOT ratio en hispanohablantes con Enfermedad de Parkinson

“…sílaba aislada, palabra aislada, habla conectada), el punto articulatorio (bilabial, alveolar, velar), la altura vocálica de la vocal subsecuente (alta, media, baja) y la velocidad del habla. Así mismo, se ha investigado cómo se comporta en personas con desórdenes ya sean del lenguaje (Auzou et al, 2000; Kopkalli-Yavuz, Mavis y Akyildiz, 2011), de la audición (Khouw y Ciocca, 2007;Lane y Perkell, 2005) y del habla (Auzou et al, 2000;Bunton y Weismer, 2002;Kisomi et al, 2020), entre ellos la disartria asociada a la Enfermedad de Parkinson (EP).…”

Voice onset time in children with bilateral cochlear implants

“…조음 위치에 따른 VOT값은 연구개음의 VOT값이 치조음과 양순음보다 길며, 조 음위치가 뒤로 이동할수록 길어진다 (Pae et al, 1999) (Glaubitz et al, 2021;Han, 2005;Heo & Ha, 2010;Kang & Ha, 2013;Kim, 2006;Kim, 2010;Kirk, 2000;Lee, 2009) (Han, 2013;Jang, 2013;Kim, 2017;Lundeborg et al, 2012) (Jang, 2013;Kim, 2017;Oh et al, 2000)에서도 한국어 격음의 VOT값이 평음과 경음의 VOT값보다 유의하게 길었다. 영어와 프랑스어에서도 격음의 VOT값이 가장 길었으며 (Caramazza & Yeni-Komshian, 1974;Lisker & Abramson, 1967), 12-14세 중국 청소년의 VOT에서도 격음의 VOT값이 가장 길었다 (Khouw & Ciocca, 2007) (Kim, 1997). 또한, 발성 과정 중 터지는 에너지가 격음이 가장 커 평음과 경음보다 더 많은 성문하압이 필요하다.…”