標題: Objective and subjective analysis of effects of listening angle on crosstalk cancellation in spatial sound reproduction
作者: Bai, Mingsian R.
Lee, Chih-Chung
機械工程學系
Department of Mechanical Engineering
公開日期: 1-十月-2006
摘要: A comprehensive study was conducted to explore. the effects of listening angle on crosstalk cancellation in spatial sound reproduction using two-channel stereo systems. The intention is to establish a sustainable configuration of crosstalk cancellation system (CCS) that best reconciles the separation performance and the robustness against lateral head movement, not only in theory but also in practice. Although crosstalk can in principle be suppressed using multichannel inverse filters, the CCS does not lend itself very well to practical application owing to the fact that the sweet spot is being so small. Among the parameters of loudspeaker deployment, span angle is a crucial factor that has a profound impact on the separation performance and sweet spot robustness achievable by the CCS This paper seeks to pinpoint, from a more comprehensive perspective, the optimal listening angle that best reconciles the robustness and performance of the CCS. Two kinds of definitions of sweet spot are employed for assessment of robustness. In addition to the point source model, head related transfer functions (HRTF) are employed as the plant models in the simulation to emulate more practical localization scenarios such as the high-frequency head shadowing effect. Three span angles including 10, 60, and 120 deg are then compared via objective and subjective experiments. The Friedman test is applied to analyze the data of subjective experiments. The results indicate that not only the CCS performance but also the panning effect and head shadowing will dictate the overall performance and robustness. The 120-deg arrangement performs comparably well as the standard 60-deg arrangement, but is much better than the 10-deg arrangement. (c) 2006 Acoustical Society of America.
URI: http://dx.doi.org/10.1121/1.2257986
http://hdl.handle.net/11536/11739
ISSN: 0001-4966
DOI: 10.1121/1.2257986
期刊: JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
Volume: 120
Issue: 4
起始頁: 1976
結束頁: 1989
顯示於類別:期刊論文


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