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구관조 음성모방의 음향학적 분석을 통한 음성인식에 대한 고찰
이옥분,정옥란,Lee, Ok-Bun,Jeong, Ok-Ran 한국음성학회 2005 음성과학 Vol.12 No.2
This study was an attempt to determine acoustic characteristics in myna bird's notes. Two myna birds' sounds imitating a normal male voice in his late 20's were sampled and analyzed. The analyses included the mean values of F1, F2, F3 and pitch contours. The results were as follows; First, there was a significan difference in the mean values of F1, F2, and F3 in isolatd vowel /a/ and /i/ between the myna birds' sounds and the human voice. However, there was no apparent difference in pitch contour of their formants. Second, there was a difference in pitch contour of their formants in their sentence ('hn-nyung-ha-se-yo?' meaning 'How are you?') production. Namely, the myna birds' pitch contour was located higher than that of the human's.
파킨슨증 화자의 음성 및 발화개선을 위한 음성조절 훈련 효과
이옥분(Ok-bun Lee),정옥란(Ok-ran Jeong) 한국언어치료학회 2005 言語治療硏究 Vol.14 No.2
The purpose of this study was to investigate the effects of cognitive voice control on speech improvement of patients with Parkinson disease. Particularly, this study aimed at finding the most effective method in 4 kinds of voice controlling. Voice control training focused on changing pitch with loudness simultaneously: 1) Pitch ↑+ Loudness ↑, 2) P ↓+ L↓, 3) P ↑+L↓, 4) P↓+L↑. 3 subjects with Parkinson disease were enrolled in this study. Dr. Speech 4.0 for the acoustic and perceptual analysis of voice improvement and 2 clinicians' perceptual judgement for speech intelligibility were used. The results showed that the increasing pitch & decreasing loudness training(method 3) on improving voice quality, and the 3 and 4 methods(P↓+L↑) on speech improvement in all subjects. This results suggested that the 3 & 4 methods need more reflective thinking than the another.
이옥분(Ok-Bun Lee),김소연(So-Yeon Kim) 한국언어치료학회 2009 言語治療硏究 Vol.18 No.2
This paper aimed to investigate the correlation between three different types of EAI (equally-appearing interval) scales for evaluating dysphonic severity in 22 male speakers. Investigators also examined the correlation between three kinds of EAI scales (4, 6, and 10-point), acoustic measures (jitter, shimmer, NHR) and the VHI (voice handicap index) using Spearman's correlation for intrarater reliability of three EAI scales, acoustic measures, and VHI, and Pearson's correlation for intrarater reliabilty among the four clinicians' judgements. The results showed a strong correlation between three EAI scales, ranging from (r=0.862-0.886, p<.01) and reliability among clinicians' ratings of overall severity of dysphonia using three EAI scales was very good (r>0.80). In acoustic measures, shimmer and NHR showed a strong correlation with three scales, ranging from r=0.81-0.88, and jitter correlated 0.446 and 0.507 with the 6 and 10-point equally-appearing scales, but jitter produced no significant correlation with a 4-point scale. In correlation with VHI, three EAI scales provide moderately-strong correlation with physical VHI scores. However, only a 10-point scale was strongly correlated with the total VHI scores. In conclusion, the results showed that three EAI scales have generally higher correlation to each other. The 10-point scale showed more sensitivity and vulnerability in determining overall severity and psychosocial impact than the other two scales. The results indicate the need for further investigation within this domain.
이야기 되말하기 방법이 실어증자의 어휘 산출력과 문장 표현력에 미치는 영향
이옥분(Ok-bun Lee),이상희(Sang-hee Lee) 한국언어치료학회 2007 言語治療硏究 Vol.16 No.2
This study aimed at investigating the effects of story-retelling on the word-retrieval ability and production of sentences of an aphasic subject. Story retelling tasks included to a story, memorizing it, completing and reading sentences, and retelling the story heard. The results showed that spontaneous naming ability in noun, verb and, adverb was improved after the treatment. This phenomenon occurred in both trained and untrained words. In addition, the MLUm, NDW, and NTW in connected speech were increased. This phenomenon was more prominent in NTW. Finally, the story -retelling technique enhanced word retrieval skills in connected speech. The efficacy and clinical implications of the technique were discussed.
이옥분(Ok Bun Lee),손은남(Eun Nam Sohn),안신욱(Shin Wook An) 한국언어치료학회 2013 言語治療硏究 Vol.22 No.3
The aim of this study was to know the functional communication ability for Korean adults. For this purpose, the Communicative Effectiveness Index(CETI) (Lomas et al., 1989) was translated and modified by the speech pathologists, whom are specified in the field of the adults with communication disorders. The modified version of CETI includes 16 items of different questions for communicative ability with 5-point rating scale. 142 adults with normal communication ability and 19 aphasic people responded to those questions. The results showed that the total mean scores of the adults with normal communication ability was 58.8(SD=10.6), and 39.2(SD=12.4) for the aphasic people. There were no significant differences between the males and the females within the normal speakers. But three items of the 16 questions showed the significant differences among three groups of different ages(30, 50, and 70 years of age). The differences between the normal and aphasic groups were statistically large in four groups of the normal speakers(30-40, 50, 60, and 70 years of age). There was a statistically significant correlation between each of the 14-item questions and the total scores(r=0.545-0.767, p<0.01). The 10-pair questions appeared to have a significant relationship within itself(r=0.503-0.587, p<0.01).