A parametric study of sound focusing in shallow water by using acoustic contrast control

Yi Wei Lin, Gee-Pinn James Too

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Article number1450012
JournalJournal of Computational Acoustics
Volume22
Issue number4
DOIs
Publication statusPublished - 2014 Dec 29

Fingerprint

Shallow Water
shallow water
Acoustics
Acoustic waves
acoustics
Water
Audio systems
Point Source
Frequency shift keying
Energy
Process Control
Ocean
Sound
Green's function
underwater communication
Modulation
frequency shift keying
talking
frequency control
Calculate

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics
  • Applied Mathematics

Cite this

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A parametric study of sound focusing in shallow water by using acoustic contrast control. / Lin, Yi Wei; Too, Gee-Pinn James.

In: Journal of Computational Acoustics, Vol. 22, No. 4, 1450012, 29.12.2014.

Research output: Contribution to journalArticle

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