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A Different Approach to Archimedean Spiral Equation in the Development of a High Frequency Array
Technical Paper
2010-36-0541
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The general spiral equation is an excellent tool in array development. However, some modifications can improve the array response for a certain range of frequencies. This work describes a different approach to the spiral equation aiming the project of a high frequency array (20 k - 35 k Hz). By constraining some of the array and measurements parameters, a geometry is proposed intending to maximize the dynamic range response at a focal point. The steps of this approach are discussed showing the results of the simulations for different parameters of this equation. Some of these parameters were fixed and for some others a parameter sweep was performed. The final geometry is intended to work with ultrasound applications, such as measurements of scale models, and also with the acoustic frequency range.
Authors
Citation
Fonseca, W., Ristow, J., Sanches, D., and Gerges, S., "A Different Approach to Archimedean Spiral Equation in the Development of a High Frequency Array," SAE Technical Paper 2010-36-0541, 2010, https://doi.org/10.4271/2010-36-0541.Also In
References
- Lockwood, E. H. Book of Curves Cambridge University Press Dec. 2007
- Lawrence, J. Dennis A Catalog of Special Plane Curves Dover Publications first Jun. 1972
- Weisstein, Eric W. “Archimedean Spiral.” From MathWorld - A Wolfram Web Resource 2010
- Dougherty, R. P. Underbrink, J. R. Allen, C. S. Blake, W. K. Lynch, D. Soderman, P. T. Mueller, T. J. Aeroacoustic Measurements Springer Verlag 1 Sep. 2002
- Masiero, Bruno Fonseca, William D. Müller-Trapet, Markus Dietrich, Pascal Auralization of pass-by beamforming measurements EAA EUROREGIO 2010 Ljubljana, Slovenia 2010
- Kinsler, L. E. Frey, A. R. Coppens, A. B. Sanders, J. V. Fundamentals of Acoustics Wiley 4 Dec. 1999
- Johnson, D. H. Dudgeon, D. E. Array Signal Processing: Concepts and Techniques Prentice Hall PTR facsimile Feb. 1993
- Underbrink, J. R. Practical considerations in focused array design for passive broad-band source mapping applications Master's thesis Pennsylvavia State University Pennsylvania, USA May 1995
- Dougherty, R. P. Advanced time-domain beamforming techniques 10th AIAA/CEAS Aeroacoustics Conference , number AIAA-2004-2955 Manchester, United Kingdom May 2004
- G.R.A.S. Sound & Vibration 1/4-inch Prepolarized Free-Field Microphone Type 40BE - Product Data and Specifications Jul. 2010
- Guo, Y. Streett, C. Stoker, R. W. Burnside, N. Airframe noise source locations of a 777 aircraft in flight and comparisons with past model scale tests 9th AIAA/CEAS Aeroacoustics Conference and Exhibit , number AIAA-2003-3232 Hilton Head, South Carolina, USA May 2003
- Oerlemans, Stefan Sijtsma, Pieter Acoustic Array Measurements of a 1:10.6 Scaled Airbus A340 Model 10th AIAA/CEAS Aeroacoustics Conference , number AIAA-2004-2924 Manchester, Great Britain May 2004
- Christensen, J.J. Hald, J. Technical review: Beamforming Technical Report 1 Brüel and Kjær Nærum, Denmark 2004
- Dougherty, R. P. Extensions of damas and benefits and limitations of deconvolution in beamforming 11th AIAA/CEAS Aeroacoustics Conference (26th AIAA Aeroacoustics Conference) , number AIAA-2005-2961 Monterey, CA, USA May 2005
- Underbrink, J. R. Dougherty, R. P. Array design for non-intrusive measurement of noise sources Noise-Con Seattle, Washington, USA Sep. 1996
- International Electrotechnical Commission IEC-61260 - Electroacoustics - Octave-band and fractional-octave-band filters Aug. 1995
- Brooks, T. F. Humphreys, W. M. A Deconvolution Approach for the Mapping of Acoustic Sources (DAMAS) Determined from Phased Microphone Arrays Journal of Sound and Vibration 294 4-5 856 879 Mar. 2006
- Sijtsma, P. CLEAN based on spatial source coherence International Journal of Aeroacoustics 6 357 374 Dec. 2007
- Dougherty, R. P. Fonseca, W. D. Gerges, S. N. Y. State of the art beamforming software and hardware for applications (keynote lecture) 16th International Congress on Sound and Vibration - ICSV2009 Krakow, Poland Jul. 2009