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Journal Article Maximization of Acoustic Energy Difference between Two Spaces
Cited 136 time in scopus Share share facebook twitter linkedin kakaostory
Authors
Mincheol Shin, Sung Q. Lee, Filippo M. Fazi, Philip A. Nelson, Daesung Kim, Semyung Wang, Kang Ho Park, Jeongil Seo
Issue Date
2010-07
Citation
Journal of the Acoustical Society of America, The, v.128, no.1, pp.121-131
ISSN
0001-4966
Publisher
American Institute of Physics (AIP), Acoustical Society of American (ASA)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1121/1.3438479
Abstract
There has recently been an increasing interest in the generation of a sound field that is audible in one spatial region and inaudible in an adjacent region. The method proposed here ensures the control of the amplitude and phase of multiple acoustic sources in order to maximize the acoustic energy difference between two adjacent regions while also ensuring that evenly distributed source strengths are used. The performance of the method proposed is evaluated by computer simulations and experiments with real loudspeaker arrays in the shape of a circle and a sphere. The proposed method gives an improvement in the efficiency of radiation into the space in which the sound should be audible, while maintaining the acoustic pressure difference between two acoustic spaces. This is shown to give an improvement of performance compared to the contrast control method previously proposed. © 2010 Acoustical Society of America.
KSP Keywords
Acoustic energy, Acoustic pressure, Acoustic source, Adjacent region, Computer simulation(MC and MD), Energy difference, Pressure difference, Sound field, control method, distributed source, loudspeaker array