지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.1
- 수록면
- 190 - 195 (6page)
이용수
초록· 키워드
오류제보하기
There have been constant demands on effective compression schemes for speech signals in both clinical and commercial applications. The effects of these strategies on word recognition tasks appeared to be dependent on the implemented algorithm of the compression, the features of the speech, and the properties of the auditory processing system. It, therefore, is necessary to evaluate the effects of compression schemes on individual languages. However, the related standard data for Korean words were limited in number and this might lead to the inadequate application of the particular compression scheme. In this study, the properties of a typical time-frequency altered compression scheme were analyzed for Korean quintet monosyllabic digit sets in normal hearing young adults. The representative basic compression scheme was based on the time-frequency altered compression preserving no particular traits (PNT) in spectro-temporal domain. Twenty normal hearing young adult subjects (10 males, 10 females) were evaluated for this scheme with the predetermined compression ratios of 1 (no compression), 0.71, 0.5, 0.33, and 0.25. These randomized quintet stimuli were presented to the subjects through acoustically calibrated insert earphones in a custom-made auditory workstation. The results showed rapid deterioration of performance for the corresponding high compression ratios. No statistically significant differences were observed for male and female subjects in the outcomes of the five compression ratios (p > 0.05). In the response profile of PNT, the estimated compression ratio for 50% performance was about 0.44. In summary, a typical time-frequency altered compression scheme (PNT) showed a poor performance near the point where the amount of compression was doubled. This, however, may not indicate the same results for optimized time-frequency features. Thus, profiles of individual compression schemes need to be clinically evaluated and compared for their efficiency and effectiveness.
목차
등록된 정보가 없습니다.
참고문헌 (16)
참고문헌 신청
Drullman, R. / 1994 / Temporal envelope and fine structure cues for speech intelligibility / Journal of Acoustical Society of America 97 (1) : 585 ~ 592
Freeman, B. A. / 1977 / Recall and repetition of time-compressed sentential approximations by normal-hearing young adults / Journal of the American Audiology Society 3 (1) :
Gordon-Salant, S. / 2007 / Recognition of time-compressed and natural speech with selective temporal enhancements by young and elderly listeners / Journal of Speech, Language
Grimes, A. / 1984 / Clinical considerations in the use of time-compressed speech / Ear and Hearing 5 : 114 ~ 117
Janse, E. / 2004 / Word perception in fast speech: Artificially time-compressed vs naturally produced fast speech / Speech Communication 42 : 155 ~ 173
Freeman, B. A. / 1977 / Recall and repetition of time-compressed sentential approximations by normal-hearing young adults / Journal of the American Audiology Society 3 (1) :
Gordon-Salant, S. / 2007 / Recognition of time-compressed and natural speech with selective temporal enhancements by young and elderly listeners / Journal of Speech, Language
Grimes, A. / 1984 / Clinical considerations in the use of time-compressed speech / Ear and Hearing 5 : 114 ~ 117
Janse, E. / 2004 / Word perception in fast speech: Artificially time-compressed vs naturally produced fast speech / Speech Communication 42 : 155 ~ 173
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