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Korean-English Bilinguals’ perception of noise-vocoded speech

Lee, Keebbum state
http://rave.ohiolink.edu/etdc/view?acc_num=osu1562004544370682

Abstract Details

2019, Master of Arts, Ohio State University, Speech Language Pathology.
Speech processing in one’s second language can be challenging for non-native listeners. It becomes even more difficult for them in degraded listening conditions such as background noise. Most verbal communication takes place in some degrees of background noise, which may affect how well the non-native listeners can process and comprehend. Previous studies have demonstrated that bilingual listeners’ performance on listening comprehension tasks in English is less accurate than that of native English listeners. However, researchers have not examined the effect of vocoded speech on bilingual listener’s speech processing abilities. Vocoded speech refers to degraded speech with less spectral information due to filtering through noise-band channels. This vocoded speech is similar to what a person with a cochlear implant (CI) may hear, which sounds distorted. The purpose of the current study is to examine how much information about talker dialect and sex in vocoded speech is available to non-native listeners as compared to native listeners. 20 Korean-English bilingual listeners participated in this study. Target sentences were 400 stimuli utterances from 40 different speakers (20 from Central Ohio and 20 from Western North Carolina) that were processed through vocoding (4, 8, 12, 16 frequency bands). After listening to the target sentences, the participants were asked to identify talker dialect and sex in the identification task (ID task) and were asked to repeat what they heard in the intelligibility task (INT task). Results of this study demonstrated that bilingual listeners performed less accurately on identifying talker dialect and sex as well as repeating the target sentences as compared to native listeners when listening to vocoded speech. Overall, these results provided further evidence that processing speech in one’s second language is much more demanding than in one’s native language when listening in degraded conditions.
Robert Fox (Committee Chair)
Ewa Jacewicz (Advisor)
56 p.
Linguistics; Speech Therapy
Noise-vocoded speech; bilingualism, speech perception

Recommended Citations

Citations

  • Lee, K. S. (2019). Korean-English Bilinguals’ perception of noise-vocoded speech [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1562004544370682

    APA Style (7th edition)

  • Lee, Keebbum. Korean-English Bilinguals’ perception of noise-vocoded speech. 2019. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1562004544370682.

    MLA Style (8th edition)

  • Lee, Keebbum. "Korean-English Bilinguals’ perception of noise-vocoded speech." Master's thesis, Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1562004544370682

    Chicago Manual of Style (17th edition)

osu1562004544370682
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This open access ETD is published by The Ohio State University and OhioLINK.