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논문 기본 정보

자료유형
학술저널
저자정보
곽현구 (고려대학교) 김희국 (고려대학교) 정주노 (고려대학교) 강대임 (한국표준과학연구원) 박연규 (한국표준과학연구원) 구민모 (고려대학교)
저널정보
Korean Society for Precision Engineering Journal of the Korean Society for Precision Engineering 한국정밀공학회지 Vol.28 No.5
발행연도
2011.5
수록면
638 - 647 (10page)

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초록· 키워드

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Various approaches directly using vibrations of speakers have been suggested to effectively display the aural information such as the music to the hearing-impaired or the deaf. However, in these approaches, the human can't sense the frequency information over the maximum perceivable vibro-tactile frequency (around 1kHz). Therefore, in this study, an approach via spectral modulation of compressing the high frequency audio information into perceivable vibrotactile frequency domain and outputting the modulated signals through the designated speakers is proposed. Then it is shown, through simulations of using Short-Time Fourier Transform (STFT) with Hanning windows and through preliminary experiments of using the vibro-tactile display testbed which is built and interfaced with a notebook PC, that the modulated signal of a natural sound composing sounds of a frog, a bird, and a water stream could produce the noise-free signal suitable enough for vibro-tactile speakers without causing significant interfering disturbances, Lastly, for three different combinations of information provided to the subject, that is, i) with only video image, ii) with video image along with the modulated vibro-tactile stimuli as proposed in this study to the forearm of the subject, and iii) with video image along with full audio information, the effects to the human sense of reality and his emotion to given audio-video clips including various sounds and images are investigated and compared. It is shown from results of those experiments that the proposed method of providing modulated vibro-tactile stimuli along with the video images to the human has very high feasibility to transmit pseudo-aural sense to the human.

목차

1. 서론
2. 청각신호의 진동촉감 재현 시스템
3. 스펙트럼 변조 방안
4. STFT를 이용한 스펙트럼 변조
5. 자연소리에 대한 모의실험
6. 스펙트럼 압축변조 방식의 인지 및 감성 실험
7. 논의
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