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http://dx.doi.org/10.5050/KSNVN.2008.18.7.701

Personal Monitor & TV Audio System by Using Loudspeaker Array  

Lee, Chan-Hui (한국과학기술원 소음진동제어센터)
Chang, Ji-Ho (한국과학기술원 소음진동제어센터)
Park, Jin-Young (한국과학기술원 소음진동제어센터)
Kim, Yang-Hann (한국과학기술원 소음진동제어센터)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.18, no.7, 2008 , pp. 701-710 More about this Journal
Abstract
Including a TV set and a monitor, personal audio system is raising a great interest. In this study, we applied a method to make a good bright zone around the user and dark zone to other region by maximizing the ratio of sound energy between the bright and dark zone. It has been well known as acoustic contrast control. We have attempted to use a line loudspeaker array system to localize the sound in our listening zone. It depends on the size of the zone and array parameters, for example, array size, loudspeaker unit spacing, wave length of sound. We have considered these parameters as spatial variables and studied the effects. And we have found that each spatial variable has its own characteristic and shows very different effect. Genetic algorithms are introduced to find out the optimum value of spatial variables. As a result, we can improve the result of the acoustic contrast control by optimum value of spatial variables.
Keywords
Acoustic Contrast; Loudspeaker Array; Spatial Variables;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Choi, J.-W. and Kim, Y.-H., 2004, 'Manipulation of Sound Intensity Within a Selected Region Using Multiple Sources', J. Acoust. Soc. Am., 116, pp. 843-852   DOI   ScienceOn
2 Fuller, C. R., Elliot, S. J. and Nelson, P. A., 1996, 'Active Control of Vibration', Academic Press Limited
3 Istvan L. Ver, Leo L. Beranek, 2006, 'Noise and Vibration Control Engineering 2nd ed.', John Wiley & Sons
4 Wright, S. E. and Vuksanovic, B., 1996, 'Active Control of Environmental Noise', Journal of Sound and Vibration, Vol. 190, No. 3, pp. 565-585   DOI   ScienceOn
5 Meirovitch, L., 1997, 'Principles and Techniques of Vibrations', Prentice Hall, pp. 232-249
6 Choi, J.-W. and Kim, Y.-H., 2002, 'Generation of an Acoustically Bright Zone with an Illuminated Region Using Multiple Sources', J. Acoust. Soc. Am., Vol. 111, pp. 1695-1700   DOI   ScienceOn
7 Choi, J.-W., Kim, Y.-H. and Park, Y.-J., 2005, 'Spatial Manipulation of Sound Using Multiple Source', Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 15 No. 12, pp. 1378-1388   과학기술학회마을   DOI   ScienceOn
8 Belegundu, A. D. and Chandrupatla, T., 1999, 'Optimization Concepts and Applications in Engineering', Prentice Hall, pp. 222-258
9 Zbigniew Michalewicz, 1996, Genetic Algorithms + Data Structures = Evolution programs, Springer-Verlag