• 대한청각학회지
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• 제24권4호
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• pp.180-190
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• 2020

Background and Objectives: Although many studies have evaluated the effect of the digital noise reduction (DNR) algorithm of hearing aids (HAs) on speech recognition, there are few studies on the effect of DNR on music perception. Therefore, we aimed to evaluate the effect of DNR on music, in addition to speech perception, using objective and subjective measurements. Subjects and Methods: Sixteen HA users participated in this study (58.00±10.44 years; 3 males and 13 females). The objective assessment of speech and music perception was based on the Korean version of the Clinical Assessment of Music Perception test and word and sentence recognition scores. Meanwhile, for the subjective assessment, the quality rating of speech and music as well as self-reported HA benefits were evaluated. Results: There was no improvement conferred with DNR of HAs on the objective assessment tests of speech and music perception. The pitch discrimination at 262 Hz in the DNR-off condition was better than that in the unaided condition (p=0.024); however, the unaided condition and the DNR-on conditions did not differ. In the Korean music background questionnaire, responses regarding ease of communication were better in the DNR-on condition than in the DNR-off condition (p=0.029). Conclusions: Speech and music perception or sound quality did not improve with the activation of DNR. However, DNR positively influenced the listener's subjective listening comfort. The DNR-off condition in HAs may be beneficial for pitch discrimination at some frequencies.

• 말소리와 음성과학
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• 제5권3호
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• pp.21-29
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• 2013

The mismatch negativity (MMN) is known to be a fronto-centrally negative component of the auditory event-related potentials (ERP). $N\ddot{a}\ddot{a}t\ddot{a}nen$ et al. (1997) and Winkler et al. (1999) discuss that MMN acts as a cue to a phoneme perception in the ERP paradigm. In this study a perception experiment based on an ERP paradigm to check how Korean and American English speakers perceive the American English high front vowels was conducted. The study found that the MMN obtained from both Korean and American English speakers was shown around the same time after they heard F1s of English high front vowels. However, when the same groups heard English words containing them, the American English listeners' MMN was shown to be a little faster than the Korean listeners' MMN. These findings suggest that non-speech sounds, such as F1s of vowels, may be processed similarly across speakers of different languages; however, phonemes are processed differently; a native language phoneme is processed faster than a non-native language phoneme.

• Journal of Audiology & Otology
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• 제23권4호
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• pp.181-186
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• 2019

Background and Objectives: This study compared the perception of mono-syllabic and bisyllabic words in Tamil by young normal hearing adults in the presence of multi-talker speech babble at two signal-to-noise ratios (SNRs). Further for this comparison, a speech perception in noise test was constructed using existing mono-syllabic and bi-syllabic word lists in Tamil. Subjects and Methods: A total of 30 participants with normal hearing in the age range of 18 to 25 years participated in the study. Speech-in-noise test in Tamil (SPIN-T) constructed using mono-syllabic and bi-syllabic words in Tamil was used as stimuli. The stimuli were presented in the background of multi-talker speech babble at two SNRs (0 dB and +10 dB SNR). Results: The effect of noise on SPIN-T varied with SNR. All the participants performed better at +10 dB SNR, the higher of the two SNRs considered. Additionally, at +10 dB SNR performance did not vary significantly for neither mono-syllabic or bi-syllabic words. However, a significant difference existed at 0 dB SNR. Conclusions: The current study indicated that higher SNR leads to better performance. In addition, bi-syllabic words were identified with minimal errors compared to mono-syllabic words. Spectral cues were the most affected in the presence of noise leading to more of place of articulation errors for both mono-syllabic and bi-syllabic words.

• 대한청각학회지
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• 제23권4호
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• pp.181-186
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• 2019

Background and Objectives: This study compared the perception of mono-syllabic and bisyllabic words in Tamil by young normal hearing adults in the presence of multi-talker speech babble at two signal-to-noise ratios (SNRs). Further for this comparison, a speech perception in noise test was constructed using existing mono-syllabic and bi-syllabic word lists in Tamil. Subjects and Methods: A total of 30 participants with normal hearing in the age range of 18 to 25 years participated in the study. Speech-in-noise test in Tamil (SPIN-T) constructed using mono-syllabic and bi-syllabic words in Tamil was used as stimuli. The stimuli were presented in the background of multi-talker speech babble at two SNRs (0 dB and +10 dB SNR). Results: The effect of noise on SPIN-T varied with SNR. All the participants performed better at +10 dB SNR, the higher of the two SNRs considered. Additionally, at +10 dB SNR performance did not vary significantly for neither mono-syllabic or bi-syllabic words. However, a significant difference existed at 0 dB SNR. Conclusions: The current study indicated that higher SNR leads to better performance. In addition, bi-syllabic words were identified with minimal errors compared to mono-syllabic words. Spectral cues were the most affected in the presence of noise leading to more of place of articulation errors for both mono-syllabic and bi-syllabic words.

• 한국콘텐츠학회논문지
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• 제21권5호
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• pp.285-294
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• 2021

모국어 습득과 달리 제2언어 또는 외국어 습득 분야에서는 발화와 인지의 관계가 연구마다 다르게 나타나고 있다는 점에서 본 연구는 영어를 외국어로 배우는 한국 EFL 대학생들의 영어 모음의 발화와 인지 테스트의 사례연구를 통해서 인지와 발화의 관계를 심도 있게 고찰하는 것을 목표로 하였다. 이를 위해 19명의 수도권의 대학생을 대상으로 미국영어 모음에 대한 발화와 인지 테스트를 실시하였으며, 그 결과를 통해서 발화와 인지의 선행관계와 상관관계를 살펴보았다. 첫 번째 연구문제인 미국영어 모음에 대한 발화와 인지의 선행관계는 전체 모음의 결과에서 발화와 인지 정확도 사이의 유의한 차이가 나타나지 않았으므로 인지 선행론이나 발화 선행론에 대한 증거가 되지 못했다. 개별 모음에서는 [ɛ], [α], [ɔ], [u] 모음들의 발화와 인지 정확도 차이만 유의하게 나타났으며 나머지 모음들의 발화와 인지 정확도의 차이는 유의하지 않았으므로 발화와 인지의 선행 관계는 모음에 따라서 다르다고 볼 수 있다. 두 번째 연구문제인 미국영어 모음에 대한 발화와 인지 사이의 상관관계는 전체 모음 뿐 만 아니라 개별 모음들에서도 상관관계가 없는 것으로 나타났다. 즉, 인지 정확도가 높다고 해서 발화 정확도가 높거나, 거꾸로 발화 정확도가 높다고 해서 인지 정확도가 높을 만큼의 발화와 인지 사이에 밀접한 관계를 보여주지 못했다. 언어습득은 인지와 발화를 통합하는 과정이고, Flege와 동료들이 보고한 것처럼 L2 경험이 많을수록 발화와 인지 능력이 밀접하게 관련되어 발전한다는 점을 고려하면, 영어 경험이 상대적으로 적은 EFL 학생을 대상으로 한 본 연구 결과는 발화와 인지 사이의 상관관계는 언어 습득 단계에 따라서 발화와 인지가 서로 연결되는 방향으로 변화한다는 것을 시사한다. 본 연구 결과를 바탕으로 영어교육현장에 접목하는 시도가 있었다.

• 대한음성학회:학술대회논문집
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• 대한음성학회 2000년도 7월 학술대회지
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• pp.178-178
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• 2000

This paper IS concerned with adults' foreign language aquisition and intends to research the relationship between the mother tongue's phonetic system (L1) and the perception of the foreign language (L2), in this paper Polish and Korean. The questions that are to help to define the aforementioned relationship are I) how Polish perceive Korean vowels, 2) how Koreans perceive Polish vowels, and 3) how Koreans perceive Korean vowels pronounced by Poles. In order to identify L2's vowels, the listeners try to fit them into the categories of their own language (L1). On the one hand, vowels that are the same in both languages and those that are articulated where no other vowel is articulated, have the best rate of recognition. For example, /i/ in both languages is a front close vowel and in both languages there are no other front close vowels. Therefore, vowels /i/ (and /a/) have the best rate of recognition in all three experiments. On the other hand, vowels that are unfamiliar to the listeners do not seem to have the worst rate of recognition. The vowels that have the worst rate of recognition are those, that are similar, but not quite the same as those of L1. This research proves that "equivalence classification prevents L2 learners from producing similar L2 phones, but not new L2 phones, authentically" (Flege, 1987). Polish speakers can pronounce unfamiliar L2 vowels "more authentically" than those similar to L1 vowels. However, the difference is not significant and this subject requires further research (different data, more informants).

• 한국도서관정보학회지
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• 제51권1호
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• pp.179-200
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• 2020

한국학의 연구 범위는 한국의 역사, 문학, 정치, 사회, 경제, 종교 등 한국과 관련된 모든 영역을 망라하고 있다. 본 연구는 문헌동시인용 분석과 텍스트마이닝 기법을 사용하여 한국학 지식구조를 정의하였다. 그리고 한국학을 다룬 주체에 따라 한국에서 논의된 한국 연구를 주체 인식 한국학, 한국 이외의 지역에서 논의된 한국 연구를 타자 인식 한국학으로 나누어 하위영역을 비교·분석하였다. 이를 위해서 SCOPUS 데이터베이스에서 'Korea' 또는 'Korean' 이라는 단어를 키워드로 포함하고 있는 인문·사회 분야 문헌 10,929건을 수집하였다. 분석결과 주체 인식 한국학의 지식구조에서는 총 20개의 하위영역이 발견되었고, 타자 인식 한국학의 지식구조에서는 총 14개의 하위영역이 발견되었다. 주체 인식의 한국학과 타자 인식의 한국학의 하위영역 구성에 있어서 차이점은 첫째, 주체 인식 한국학의 하위영역이 타자 인식 한국학의 하위영역보다 더 다양한 영역으로 세분되어 있다는 것, 둘째, 주체 인식 한국학은 마케팅/소비자와 서비스, 산업화, 다문화, 정신건강, 관광, 한국어, 환경과 도시 등이 주요 영역을 차지하고 있고, 타자 인식 한국학은 크게 한국 대내외의 상황, 한국 대중문화, 미국 이민자로서의 한국인, 한국어/한국어 습득이 주요 영역을 차지하고 있는 것으로 나타났다. 마지막으로 주체 인식과 타자 인식에서 공통적으로 보이는 영역은 정신건강, 관광, 한국어, 탈주민, 청소년 비행 등이었다.

• 말소리와 음성과학
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• 제9권3호
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• pp.33-40
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• 2017

This study aimed to examine how Korean-English bilinguals make use of VOT and F0 cues in perception and production of Korean (lenis vs. aspirated) and English (voiced vs. voiceless) stops. It was explored whether bilinguals with extensive experience living in the U.S. exhibit native-like or interactive patterns in the cue use for both languages. Participants produced monosyllabic word-initial stops within a carrier sentence in each language, and performed forced-choice identification tasks with synthesized stimuli varying in 7 VOT steps and 7 F0 steps with base tokens of /$t^han$/ for Korean and /$t{\ae}n$/ for English. Listeners were required to select either /tan/ or /$t^han$/ for Korean and either /$d{\ae}n$/ or /$t{\ae}n$/ for English. The results from binary logistic regression analyses for each listener indicated that all bilinguals placed greater weight on F0 than VOT when distinguishing between the Korean lenis and aspirated stops, and greater weight on VOT than F0 in distinguishing between the English voiced and voiceless stops. In terms of production, all participants showed remarkably overlapping ranges in the VOT dimension and separating ranges in the F0 dimension for the stop contrast of Korean, while forming overlapping ranges in the F0 dimension and separating ranges in the VOT dimension for the stop contrast of English. These results indicate that the bilinguals with extensive exposure to L2 manage the stop systems of the two languages independently, both in perception and production, employing the opposite cue use for stops in the two languages. It was also found that the absolute beta-coefficient values of the perceptual cues for Korean stops were generally smaller than those for English and those reported in a previous study as for later bilinguals, which may have resulted from Korean not being their dominant language.

• 한국어교육
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• 제29권1호
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• pp.109-137
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• 2018

The purpose of teacher education is to improve the professionalism of teachers above the current level. The type of teacher education to improve the professionalism of experienced teachers is broadly divided into top-down education and bottom-up education. So far, studies on top-down education were commonly conducted in the field of Korean language education. However, there has been an increasing number of studies emphasizing the need for bottom-up education, driven by the voluntary participation of teachers in recent years. The purpose of this study is to suggest the direction of reflective teacher education for experienced Korean language teachers. For this purpose, a survey was conducted of 71 Korean language teachers who had more than 5 years of experience. The contents of the survey consisted of opinions regarding existing teacher education, the need for reflective teacher education, and the perception of teaching professionalism. The results showed that experienced Korean language teachers had a positive perception of the existing teacher re-education experience. Also, 91% of the respondents said they intend to participate in the reflective teacher education program. In particular, respondents showed high demands for 'peer coaching', 'peer observation', and 'teaching portfolios' among reflective teacher education programs. Lastly, many respondents selected 'development and utilization of teaching materials', 'encouraging learner's utterances', and 'leading learner's interest and motivation' as sub-elements of teaching professionalism that they wish to improve through teacher re-education.

• 영어어문교육
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• 제11권4호
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• pp.97-120
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• 2005

Production and perception of second language sounds are typically influenced by second language learners' native language sounds. In this study we investigate how the Korean language influences Korean speakers' production of English alphabets. In the experiment conducted to prepare for this study 16 native speakers of Korean pronounced English alphabets. Then three native speakers of English evaluated the Korean subjects' pronunciation of them. The results show that the Korean subjects' native language (i.e., Korean) influences their production of the English alphabets. When Korean has sounds corresponding to English alphabets, the English subjects rate the Korean subjects' production of them good. For instance, Korean has voiceless stop phonemes, hence their production of English alphabets was rated good by the English subjects. The Korean subjects' production of English alphabets containing the sounds that do not exist in Korean was rated poor by the English subjects. For instance, Korean does not have voiced fricative phonemes, hence their production of English alphabets was rated poor.