한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2002년도 춘계학술대회논문집
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- Pages.559-564
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- 2002
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- 1598-2548(pISSN)
직접 역필터 설계법을 이용한 스테레오 재생시스템의 Cross-talk 제거
A DIRECT INVERSE-BASED CROSS-TALK CANCELLATION METHOD FOR STEREO AUDIO SYSTEMS
- Kim, Sang-Myeong (Dept. of Mechatronics, Gwangju Institute of Science and Technology) ;
- Dogeun Han ;
- Semyung Wang (Dept. of Mechatronics, Gwangju Institute of Science and Technology)
- 발행 : 2002.05.01
초록
Cross-talk cancellation, inverse filter design or deconvolution in a generic term, is a vital process for a virtual sound realization in the stereo sound reproduction system. Most, if not all, of the design algorithms available for the inverse filter are based on a linearized model of the real physical plant. The result of such a plant-based design method, which may be referred to here as the indirect method, is biased due to both modelling and inversion errors. This paper presents a novel direct cross-talk cancellation method that may be free from the inversion error. The direct method can directly models the inverse filter by a suitable rearrangement of the input and output ports of the original plant so that no inversion is required here. Advantages are discussed with various experiments in an anechoic chamber using a PC soundcard. Binaural reproduction tests conducted showed that the conventional indirect method yields about 8 % reproduction performance error on both ear positions, whereas the direct method offers about 3 %.
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