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http://dx.doi.org/10.5050/KSNVE.2013.23.11.951

Sweet Spot Analysis of Linear Array System with a Large Number of Loudspeakers by Geometrical Approach Method  

Yang, Hunmin (Department of Mechanical Engineering, KAIST)
Park, Youngjin (Department of Mechanical Engineering, KAIST)
Park, Youn-Sik (Department of Mechanical Engineering, KAIST)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.23, no.11, 2013 , pp. 951-956 More about this Journal
Abstract
This paper describes techniques used to analyze the sweet spot of sound field reproduced by ear-level linear arrays of loudspeakers by geometrical approach method. Previous researches have introduced various sweet spot definitions in their own way. In general, sweet spot is defined as an area whose stereophonic sound effect is valid. Its size is affected by the geometrical arrangement of the system. In this paper, a case when plane waves are generated by linear arrays of loudspeakers in the horizontal plane is considered. So the sweet spot is defined as an area in which the listener can perceive the desired azimuth angle. Because there are many loudspeakers, impulse responses at listener's ears are in the form of pulse-train and the time-duration of the pulse-train affects the localization performance of the listener. So we calculated the maximum time duration of pulse-train by geometrical approach method and identified with the results of impulse response simulation. This paper also includes parameter analysis with respect to aperture size, so it suggests a tool for sound engineers to expect the sweet spot size and listener's sound perception.
Keywords
Sweet Spot; Linear Array; Impulse Response; Pulse-train; Time Duration; Aperture Size;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Lee, C., Chang, J., Park, J. and Kim, Y., 2008, Personal Monitor & TV Audio System by Using Loudspeaker Array, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 18, No. 7, pp. 701-710.   과학기술학회마을   DOI   ScienceOn
2 Lee, J., Park, Y. and Park, Y., 2012, Comparison of Sound Field Reproduction Technique Using Least-squares Method and Wave Field Synthesis, Proceedings of the KSNVE Annual Autumn Conference, pp. 454-455.
3 Sun, J. and Kim, K., 2012, Isolation of Vibrations due to Speakers in Audio-visual Electronic Devices without Deteriorating Vibration of Speaker Cone, Journal of JMST, Vol. 26, No. 3, pp. 723-730.   과학기술학회마을   DOI   ScienceOn
4 Merchel, S. and Groth, S., 2009, Adaptive Adjustment of the "Sweet Spot" to the Listener's Position in a Stereophonic Play Back System - Part 1, Proceedings of ICA, pp. 1-2.
5 Rose, J., Nelson, P., Rafaely, B. and Takeuchi, T., 2002, Sweet Spot Size of Virtual Acoustic Imaging Systems at Asymmetric Listener Locations, J. Acoust. Soc. Am., Vol. 112, No. 5, pp. 1-2.
6 Takeuchi, T. and Nelson, P., 2001, Robustness to Head Misalignment of Virtual Sound Imaging Systems, Journal of the Acoustical Society of America, Vol. 109, No. 3, pp. 1-2.   DOI
7 Yang, H., Park, Y. and Park, Y., 2013, Sweet Spot Analysis of Sound Field Reproduced by Ear-level Linear Arrays of Loudspeakers Using Inter-aural Time Difference Cue, Proceedings of 15th APVC, pp. 5-6.
8 Litovsky, R., Colburn, H., Yost, W. and Guzman, S., 1999, The Precedence Effect, JASA, Vol. 106, No. 4, pp. 1633-1654.   DOI
9 Lee, C. and Park, Y., 2000, Effective Layout of Loudspeakers in a Multichannel Sound System for Real Time Virtual Sound Reproduction, Proceedings of the KSNVE Annual Autumn Conference, pp. 455-461.   과학기술학회마을