Design and Tests of Audio Directional System

Yang Zhang; Li Min Tao

doi:10.4028/www.scientific.net/AMM.198-199.1047

Paper Titles

An Evolutionary Method of Traditional Artificial Potential Field
p.1025

Design and Realization of Equipment Management System Based on J2EE and Android OS
p.1030

Animal Diseases Diagnosis Expert System Based on HSMC-SVM
p.1036

A Study of Hazard Management Information System in Air Transportation
p.1042

Design and Tests of Audio Directional System
p.1047

A Conceptual Design of a Measuring System of Tennis Batting Motion Attitude Based on MEMS Sensors
p.1053

General Design of New Medical Insurance IC Card System
p.1057

Research of Maintainability Evaluation for Civil Aircrafts Based on the Motion Capture System
p.1062

Research on the Battlefield Ferromagnetic Targets Recognition
p.1067

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 198-199Design and Tests of Audio Directional System

Design and Tests of Audio Directional System

Abstract:

Audio directional system is a new-style loudspeaker, which can project the sound beam onto a given region as light beam. In this paper, the basic working principle and the system components of audio directional system are proposed. The total harmonic distortion of the self-demodulated signal is analyzed based on “Berktay far-field solution”. Besides, this paper has designed the audio directional experimental system whose performances have been tested. The shortcomings of the self-demodulation theory are pointed out after the comparison between the test data and the theoretical analysis results.

You might also be interested in these eBooks

Applied Mechanics, Mechatronics Automation & System Simulation

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 198-199)

Pages:

1047-1052

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.198-199.1047

Citation:

Cite this paper

Online since:

September 2012

Authors:

Yang Zhang, Li Min Tao

Keywords:

Audio Directional System, Berktay Far-Field Solution, Directivity, Parametric Acoustic Array, Total Harmonic Distortion (THD)

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Chen Min, Xu Limei, Huang Dagui, Zhang Deyin. The research process and actuality of the audio directional loudspeaker. Audio Engineering, 259 (11) : 17~22, (2006).

Google Scholar

[2] P. J. Westervelt. Parametric Acoustic Array. The Journal of the Acoustical Society of America, 35 (4) : 535~537, (1963).

DOI: 10.1121/1.1918525

Google Scholar

[3] H. O. Berktay. Possible Exploitation of Nonlinear Acoustics in Underwater Transmitting Applications. Journal of Sound and Vibration, 2 (4) : 435~461, (1965).

DOI: 10.1016/0022-460x(65)90122-7

Google Scholar

[4] M. B. Bennett, D. T. Blackstock. Parametric Array in Air. The Journal of the Acoustical Society of America, 57 (3) : 562~568, (1975).

DOI: 10.1121/1.380484

Google Scholar

[5] Woon-Seng Gan, Jun Yang, K. S. Tan, M.H. Er. A Digital Beamsteerer for Difference Frequency in a Parametric Array. IEEE Transactions on Audio, 14 (3) : 1018~1024, (2006).

DOI: 10.1109/tsa.2005.857786

Google Scholar

[6] Qian Zuwen. Nonlinear acoustics. Beijing: Science Press, (2009).

Google Scholar

[7] Ee-Leng Tan, Peifeng Ji, Woon-Seng Gan. On preprocessing techniques for bandlimited parametric loudspeakers. Applied Acoustics, 71(5): 486~492, (2010).

DOI: 10.1016/j.apacoust.2009.11.006

Google Scholar