Constant beamwidth beamformer for difference frequency in parametric array

K. S. Tan; W. S. Gan; Jun Yang; M. H. Er

doi:10.1109/ICME.2003.1221686

Constant beamwidth beamformer for difference frequency in parametric array

K. S. Tan^*, W. S. Gan, Jun Yang, M. H. Er

^*Corresponding author for this work

Nanyang Technological University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Citations (Scopus)

Abstract

The sound reproduction in air by using a parametric acoustic array [P.J. Westervelt, 1963] has been reported for a few decades. Two inaudible ultrasonic frequencies are produced from the parametric array. Due to the nonlinearity of air, it is possible to produce an audible frequency with its frequency equal to the difference in the two ultrasonic frequencies. However, there is not much work done in controlling the beam pattern of the difference frequency generated by the primary waves. In this paper, an algorithm is proposed to control the sidelobe level of the difference frequency directivity. By making use of array signal processing techniques, the algorithm is also capable of producing a constant beamwidth for broadband difference frequency.

Original language	English
Title of host publication	Proceedings - 2003 International Conference on Multimedia and Expo, ICME
Publisher	IEEE Computer Society
Pages	II593-II596
ISBN (Electronic)	0780379659
DOIs	https://doi.org/10.1109/ICME.2003.1221686
Publication status	Published - 2003
Externally published	Yes
Event	2003 International Conference on Multimedia and Expo, ICME 2003 - Baltimore, United States Duration: Jul 6 2003 → Jul 9 2003

Publication series

Name	Proceedings - IEEE International Conference on Multimedia and Expo
Volume	2
ISSN (Print)	1945-7871
ISSN (Electronic)	1945-788X

Conference

Conference	2003 International Conference on Multimedia and Expo, ICME 2003
Country/Territory	United States
City	Baltimore
Period	7/6/03 → 7/9/03

Bibliographical note

Publisher Copyright:
© 2003 IEEE.

ASJC Scopus Subject Areas

Computer Networks and Communications
Computer Science Applications

Access to Document

10.1109/ICME.2003.1221686

Cite this

Tan, K. S., Gan, W. S., Yang, J., & Er, M. H. (2003). Constant beamwidth beamformer for difference frequency in parametric array. In Proceedings - 2003 International Conference on Multimedia and Expo, ICME (pp. II593-II596). Article 1221686 (Proceedings - IEEE International Conference on Multimedia and Expo; Vol. 2). IEEE Computer Society. https://doi.org/10.1109/ICME.2003.1221686

@inproceedings{af8262cb54dc4b86b6e63f6ff1ab47ac,

title = "Constant beamwidth beamformer for difference frequency in parametric array",

abstract = "The sound reproduction in air by using a parametric acoustic array [P.J. Westervelt, 1963] has been reported for a few decades. Two inaudible ultrasonic frequencies are produced from the parametric array. Due to the nonlinearity of air, it is possible to produce an audible frequency with its frequency equal to the difference in the two ultrasonic frequencies. However, there is not much work done in controlling the beam pattern of the difference frequency generated by the primary waves. In this paper, an algorithm is proposed to control the sidelobe level of the difference frequency directivity. By making use of array signal processing techniques, the algorithm is also capable of producing a constant beamwidth for broadband difference frequency.",

author = "Tan, {K. S.} and Gan, {W. S.} and Jun Yang and Er, {M. H.}",

note = "Publisher Copyright: {\textcopyright} 2003 IEEE.; 2003 International Conference on Multimedia and Expo, ICME 2003 ; Conference date: 06-07-2003 Through 09-07-2003",

year = "2003",

doi = "10.1109/ICME.2003.1221686",

language = "English",

series = "Proceedings - IEEE International Conference on Multimedia and Expo",

publisher = "IEEE Computer Society",

pages = "II593--II596",

booktitle = "Proceedings - 2003 International Conference on Multimedia and Expo, ICME",

address = "United States",

}

Tan, KS, Gan, WS, Yang, J & Er, MH 2003, Constant beamwidth beamformer for difference frequency in parametric array. in Proceedings - 2003 International Conference on Multimedia and Expo, ICME., 1221686, Proceedings - IEEE International Conference on Multimedia and Expo, vol. 2, IEEE Computer Society, pp. II593-II596, 2003 International Conference on Multimedia and Expo, ICME 2003, Baltimore, United States, 7/6/03. https://doi.org/10.1109/ICME.2003.1221686

Constant beamwidth beamformer for difference frequency in parametric array. / Tan, K. S.; Gan, W. S.; Yang, Jun et al.
Proceedings - 2003 International Conference on Multimedia and Expo, ICME. IEEE Computer Society, 2003. p. II593-II596 1221686 (Proceedings - IEEE International Conference on Multimedia and Expo; Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Constant beamwidth beamformer for difference frequency in parametric array

AU - Tan, K. S.

AU - Gan, W. S.

AU - Yang, Jun

AU - Er, M. H.

PY - 2003

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N2 - The sound reproduction in air by using a parametric acoustic array [P.J. Westervelt, 1963] has been reported for a few decades. Two inaudible ultrasonic frequencies are produced from the parametric array. Due to the nonlinearity of air, it is possible to produce an audible frequency with its frequency equal to the difference in the two ultrasonic frequencies. However, there is not much work done in controlling the beam pattern of the difference frequency generated by the primary waves. In this paper, an algorithm is proposed to control the sidelobe level of the difference frequency directivity. By making use of array signal processing techniques, the algorithm is also capable of producing a constant beamwidth for broadband difference frequency.

AB - The sound reproduction in air by using a parametric acoustic array [P.J. Westervelt, 1963] has been reported for a few decades. Two inaudible ultrasonic frequencies are produced from the parametric array. Due to the nonlinearity of air, it is possible to produce an audible frequency with its frequency equal to the difference in the two ultrasonic frequencies. However, there is not much work done in controlling the beam pattern of the difference frequency generated by the primary waves. In this paper, an algorithm is proposed to control the sidelobe level of the difference frequency directivity. By making use of array signal processing techniques, the algorithm is also capable of producing a constant beamwidth for broadband difference frequency.

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M3 - Conference contribution

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T3 - Proceedings - IEEE International Conference on Multimedia and Expo

SP - II593-II596

BT - Proceedings - 2003 International Conference on Multimedia and Expo, ICME

PB - IEEE Computer Society

T2 - 2003 International Conference on Multimedia and Expo, ICME 2003

Y2 - 6 July 2003 through 9 July 2003

ER -

Constant beamwidth beamformer for difference frequency in parametric array

Abstract

Publication series

Conference

Bibliographical note

ASJC Scopus Subject Areas

Access to Document

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