• 생물정신의학
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• 제9권2호
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• pp.112-119
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• 2002

Object:This study was to investigate the difference of speech perception ability in schizophrenic patients, and depression patients in order to explore trait-dependent speech perception ability of each disorder. Methods:The speech perception ability was assessed with masked speech tracking test(MST) in schizophrenic patients(N=31), depression patients(N=25), and normal controls(N=21). The continuous performance test(CPT) and sentence repetition test(SRT) were also used for assessment of attention and working memory. Results:The schizophrenic patients showed significant impaired MST performance, compared with depressive patients and normal controls. The performances of CPT and SRT were also more impaired in schizophrenic patients. The difference of MST performances between two patient group was cancelled out after consideration of differences in CPT & SRT performances. Conclusions:These results imply that schizophrenic patients have the impaired speech perception ability compared with depressive patients and normal controls. But speech perception ability was significantly influenced with CPT and SRT. For evaluation of pure speech perception ability, the more elaborate controlled study that excluded factors such as attention, working memory and intelligence is needed.

• 초등상담연구
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• 제4권1호
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• pp.167-190
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• 2005

The purpose of this study was to develop the cognitive behavioral group counseling program to relieve elementary children of speech anxiety and to examine its effects. The program was developed on the basis of the cognitive, affective, and behavioral activities. The cognitive activities were based on the REBT procedures, and affective activities included making child's nickname, finding out his own strengths and exchanging positive feedback each other and behavioral activities included training assertiveness, coaching and practicing speech behavior etc, Subjects were 14 elementary children from M elementary school in Gwangju. They had the highest scores at the speech anxiety test which was administrated to all the sixth graders of M elementary school. Seven subjects were randomly allocated to experimental group and control group respectively. Two speech anxiety tests and one speech behavior checklist were administrated as pre- and post-tests. The collected data was analyzed by ANCOVA. Research results demonstrated that the experimental group showed statistically significant changes in the scores of the speech anxiety test and the speech behavior checklist comparing with the control group. Then it was accepted that the program which was developed in this study could make effects on the reduction of elementary children's speech anxiety.

• 한국통계학회:학술대회논문집
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• 한국통계학회 2001년도 추계학술발표회 논문집
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• pp.75-76
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• 2001

An endpoint detection method for speech signals utilizing hidden Markov model(HMM) is proposed. It turns out that the proposed algorithm is quite satisfactory to apply isolated word speech recognition.

• 말소리와 음성과학
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• 제4권3호
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• pp.161-169
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• 2012

The purpose of this study was to investigate the characteristics of speech intelligibility of spontaneous speech and the vowel space parameters in patients with Parkinson's disease. Ten PD patients (M=5, F=5) and a corresponding control group of ten normal adults participated in this study. Firstly, subjects were asked to tell a story about their hometown and youth in order to analyze speech intelligibility. Secondly, the subjects were also asked to repeat four vowels (/a/, /i/, /u/, /e/) five times in order to compare their vowel spaces. The results were as follows: (1) the speech intelligibility of the PD group was lower than that of the control group. (2) Four parameters including vowel area, vowel articulatory index, formant centralization ratio, F2i/F1u ratio were significantly different in each group. For instance, vowel area and F2 ratio were wider and higher, respectively. As a result, a decrease in speech intelligibility of patients with PD is likely to show different types of errors from the normal group. The results of this research are meaningful in a sense that they could provide the objective standard of speech intelligibility and vowel space parameters.

• 대한두개안면성형외과학회지
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• 제9권2호
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• pp.72-76
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• 2008

Purpose: Authors evaluated results of palatoplasty by speech analysis in bilateral, unilateral complete, and unilateral incomplete and submucous cleft palate patients. Methods: The speech outcomes were studied in 15 bilateral, 28 unilateral complete, and 46 unilateral incomplete and submucous cleft palate patients who underwent push-back palatoplasties from January 1998 to July 2004. The patients were divided into 2 groups as 3 to 6, 7 to 10-year-old and compared with 20 normal children(control groups were divided into 10 children on each side). Nasal emission test, hypernasality test, and articulation test were done by speech evaluation table which was composed of 39 different words. Results: In all speech evaluation tests, the group of bilateral cleft palate patients got the worst score. And 7 to 10-year-old groups got better score when compared to the same type cleft palate. Conclusion: Bilateral cleft palate patients have many more speech problems than other patients. In cleft palate patients, the speech problem was improved with ages, postoperatively. And the speech therapy can improve the operative outcomes.

• 음성과학
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• 제13권1호
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• pp.69-83
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• 2006

Speech characteristics of Wernicke's aphasia are characterized by such errors as empty speech, jargon, paraphasia, filler and others. However, not all the errors can be observed in each patient presumably due to diverse auditory comprehension (AC) abilities and/or lesion loci. The purpose of this study was, thus, to clarify the speech characteristics of Wernicke's aphasics according to the AC levels (i.e., better vs. worse) and lesion loci (i.e., Wernicke's area, WA vs. non-Wernicke's area, NWA). The authors divided 21 Wernicke's aphasic patients into four patient groups based on their AC levels and the lesion loci. The results showed that the four groups differed only in CIU (Correct Information Unit) rate. The patient groups with a better AC ability had higher CIU rates than the groups with a worse AC regardless of the lesion loci (e.g., WA or NWA). Therefore, it was concluded that CIU rate, the differentiating speech variable was most likely related to the AC levels, but not to lesion loci.

• 수산해양교육연구
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• 제28권3호
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• pp.808-817
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• 2016

This study aims at reviewing differences of awareness toward speech-language therapy according to background variables of child-care teachers, and establishing a basic data necessary for special education support programs afterwards based on child-care centers and its characteristics with the results. Researcher carried out a survey by objecting child-care teachers of Chungcheongbuk-do, Korea, and looked into existence of some differences through SPSS 20.0 for Window, independent sample t-Test, ANOVA, Scheffe post verification on background characteristics such as level of education, working career, license grade, whether or not to have objects of speech-language objects in the class. Research results are same as follows. First, significant differences in awareness of child-care teachers toward speech-language therapy appeared from license grade among characteristics like level of education, license grade, whether or not to have objects of speech-language therapy in the class. Second, significant differences were displayed from whether or not to have objects of speech-language therapy in the class among characteristics such as level of education, working career, license grade, and whether or not to have objects of speech-language therapy. When putting these results together, a conclusion could be made such like awareness of child-care teachers toward speech-language therapy and therapists is able to be different a little according to background variables of teachers.

• 말소리와 음성과학
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• 제2권1호
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• pp.41-50
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• 2010

The current study exploresacoustic variation induced by prosodic contexts in different speech styles,with a focus on motherese or child-directed speech (CDS). The patterns of variation in the acoustic expression of voicing contrast in English stops, and the role of prosodic factors in governing such variation are investigated in CDS. Prosody-induced acoustic strengthening reported from adult-directed speech (ADS)is examined in the speech data directed to infants at the one-word stage. The target consonants are collected from Utterance-initial and -medial positions, with or without focal accent. Overall, CDS shows that the prosodic prominence of constituents under focal accent conditions variesin the acoustic correlates of the stop laryngeal contrasts. The initial position is not found with enhanced acoustic values in the current study, which is similar to the finding from ADS (Choi, 2006 Cole et al, 2007). Individualized statistical results, however, indicate that the effect of accent on acoustic measures is not very robust, compared to the effect of accent in ADS. Enhanced distinctiveness under focal accent is observed from the limited subjects' acoustic measures in CDS. The results indicate dissimilar strategies to mark prosodic structures in different speech styles as well as the consistent prosodic effect across speech styles. The stylistic variation is discussed in relation to the listener under linguistic development in CDS.

• 말소리와 음성과학
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• 제11권4호
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• pp.71-79
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• 2019

This study aims to investigate the rhythmic patterns in the English speech produced by Chinese learners of English who learn English as a foreign language (EFL learners). Utilizing interval-based rhythm metrics, namely, VarcoC, VarcoV, nPVI-C, nPVI-V, and %V, the study compared the rhythmic differences in English speech between ten native speakers from the United States and forty Chinese EFL learners from mainland China. A sentence elicitation task consisting of thirty picture prompts and corresponding thirty stimuli sentences with at least five vocalic and four consonantal intervals was conducted. Statistical results reveal that both Chinese advanced learners and beginners had significantly lower degree of stress-timed in their English speech, indicating that the acquisition of the L2 speech rhythm was influenced by the learners' L1 rhythmic pattern. In addition, the results also show that the Chinese advanced learners had significantly higher degree of stress-timed in their English speech than beginners and showed no significant difference with native speakers in VarcoC and nPVI-C. These results indicate that the direction of L2 speech rhythm development was from more syllable-timed to more stress-timed.

• 방송공학회논문지
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• 제22권2호
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• pp.253-256
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• 2017

본 논문에서는 기계학습 기반의 분류 방법을 이용하여 장애 음성을 검출하고자 한다. 음성 장애 중 마비말 장애는 뇌성마비, 파킨슨 질환, 뇌졸중 등 주로 뇌질환에 의해 발생하는 것으로 알려져 있다. 이러한 장애 음성을 검출함으로써 뇌졸중 등의 급성 뇌질환 발생에 대한 조기 처치가 가능하다. 장애 음성 검출은 입력 음성에 대한 특징벡터 추출과 기계학습을 이용한 분류과정을 통해 이루어질 수 있다. 실험을 위해서 장애 음성 DB인 TORGO 데이터를 사용하였으며, 10가지 기계학습 알고리즘과 다양한 특징벡터 스케일링 방법에 대해 장애 음성 검출 성능을 평가하였다.