Personal stereophonic system using loudspeakers: Feasibility study

Jin-Young Park, Jiho Chang, Yang-Hann Kim, Youngjin Park

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


Sound focused personal audio system is defined as the system that can make a user enjoy the sound without bothering userpsilas neighbors. To implement this system, it is needed to generate the acoustically bright zones where a user is supposed to be and the dark zones in userpsilas side regions. As a solution method, acoustic contrast control [Kim and Choi, J. Acoust. Soc. Am. 111. 1695 (2002)], which maximize the energy ratio between two zones, can be considered and, sound focused personal audio system for a mono sound have been implemented in 2007 as an application example and its results were reliable: 20 dB pressure level difference between the bright and dark zone. We have tried to make the sound focused personal audio system for a stereo sound as a further application: personal stereophonic system. Acoustic contrast control was also applied to implement this system and the control scheme for stereophonic sound using this method was suggested. In this paper, we address the mathematical formulations of stereophonic system using acoustic contrast control, and discussions for its capabilities for implementing the personal stereophonic system from theoretical and experimental results.
Keyword: dark zone,acoustically bright zone generation,loudspeakers,cross-talk cancellation,channel separation,personal stereophonic system,acoustic contrast control,audio systems,sound focused personal audio system
Original languageEnglish
Title of host publicationInternational Conference on Control, Automation and Systems, 2008. ICCAS 2008.
Publication date2008
ISBN (Print)978-89-950038-9-3
Publication statusPublished - 2008
Externally publishedYes
EventInternational Conference on Control, Automation and Systems 2008 - Seoul, Korea, Republic of
Duration: 14 Oct 200817 Oct 2008


ConferenceInternational Conference on Control, Automation and Systems 2008
Country/TerritoryKorea, Republic of


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