基于声对比度控制的浅水声聚焦参数化研究

Q1 Mathematics

Journal of Computational Acoustics Pub Date : 2014-09-18 DOI:10.1142/S0218396X1450012X

Yi Wei Lin, G. Too

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引用次数: 2

摘要

声学对比控制是一种应用于个人音频系统设备的声音聚焦技术，通过增加或减少特定区域的潜在声能来提供最佳的声音对比度。在本研究中，声学对比度控制被开发用于浅水声聚焦。这种技术的优点是建立了两个区域:用户周围的明亮区域和其他区域的暗区。在声学对比控制过程中，采用计算海洋声学方法计算声源点与声场点之间的格林函数。仿真了控制源数量、传输频率、源间控制距离和几何位置控制区等环境参数的影响。结果表明，声对比度控制是一种有效的浅水声聚焦方法，可以增加特定区域的潜在声能。采用该技术还可以通过在串扰应用中使用移频键控调制来增强水下通信。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Parametric Study of Sound Focusing in Shallow Water by Using Acoustic Contrast Control

Acoustic contrast control is a sound focusing technique applied to personal audio system devices to provide the optimal sound contrast for increasing or decreasing the potential sound energy of a specific area. In this study, acoustic contrast control was developed for sound focusing in shallow water. The advantage of this technique is the establishment of two zones: a bright zone around the user and a dark zone for other regions. In the acoustic contrast control process, computational ocean acoustics are used to calculate the Green's function between the source point and the field point. The effects of environmental parameters, which comprised the number of control sources, transmission frequency, control distances between sources and control zone of a geometric location were simulated. The results show that acoustic contrast control is an effective approach for sound focusing in shallow water that can increase the potential sound energy of a specific area. Employing this technique can also enhance underwater communications by using frequency-shift keying modulation for cross-talking applications.

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来源期刊

Journal of Computational Acoustics 物理-声学

CiteScore

3.90

自引率

0.00%

发文量

审稿时长

4.5 months

期刊介绍： Currently known as Journal of Theoretical and Computational Acoustics (JTCA).The aim of this journal is to provide an international forum for the dissemination of the state-of-the-art information in the field of Computational Acoustics. Topics covered by this journal include research and tutorial contributions in OCEAN ACOUSTICS (a subject of active research in relation with sonar detection and the design of noiseless ships), SEISMO-ACOUSTICS (of concern to earthquake science and engineering, and also to those doing underground prospection like searching for petroleum), AEROACOUSTICS (which includes the analysis of noise created by aircraft), COMPUTATIONAL METHODS, and SUPERCOMPUTING. In addition to the traditional issues and problems in computational methods, the journal also considers theoretical research acoustics papers which lead to large-scale scientific computations. The journal strives to be flexible in the type of high quality papers it publishes and their format. Equally desirable are Full papers, which should be complete and relatively self-contained original contributions with an introduction that can be understood by the broad computational acoustics community. Both rigorous and heuristic styles are acceptable. Of particular interest are papers about new areas of research in which other than strictly computational arguments may be important in establishing a basis for further developments. Tutorial review papers, covering some of the important issues in Computational Mathematical Methods, Scientific Computing, and their applications. Short notes, which present specific new results and techniques in a brief communication. The journal will occasionally publish significant contributions which are larger than the usual format for regular papers. Special issues which report results of high quality workshops in related areas and monographs of significant contributions in the Series of Computational Acoustics will also be published.