Department of Computer Systems

Journal article

TREEBY Bradley E., BUDISKÝ Jakub, WISE Elliott S., JAROŠ Jiří and COX Ben T. Rapid calculation of acoustic fields from arbitrary continuous-wave sources. The Journal of the Acoustical Society of America. 2018, vol. 2018, no. 143, pp. 529-537. ISSN 1520-8524. Available from: http://asa.scitation.org/doi/10.1121/1.5021245
Publication language:english
Original title:Rapid calculation of acoustic fields from arbitrary continuous-wave sources
Title (cs):Rychlý výpočet akustického pole od libovolného zdroje kontinuálních vln
Pages:529-537
Place:US
Year:2018
URL:http://asa.scitation.org/doi/10.1121/1.5021245
Journal:The Journal of the Acoustical Society of America, Vol. 2018, No. 143, US
ISSN:1520-8524
DOI:10.1121/1.5021245
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Keywords
Acoustic fields, Green's function, arbitrary shaped transducers, k-Wave
Annotation
An efficient Greens function solution is derived for calculating the acoustic field generated by phased array transducers of arbitrary shape when driven by a single frequency continuous wave excitation with spatially varying amplitude and phase. The solution is based on the Greens function for the homogeneous wave equation expressed in the spatial frequency domain or k-space. The temporal convolution integral is solved analytically, and the remaining integrals are expressed in the form of the spatial Fourier transform. This allows the acoustic pressure for all spatial positions at any time t > 0 to be calculated in a single step without numerical integration. In total, the extraction of the steady state amplitude and phase of the resulting wave field over the complete 3D domain of interest can be calculated using four fast Fourier transforms. The model is demonstrated through several numerical examples, including single element rectangular and spherically-focused bowl transducers, and multi-element linear and hemispherical arrays.
BibTeX:
@ARTICLE{
   author = {E. Bradley Treeby and Jakub Budisk{\'{y}} and S.
	Elliott Wise and Ji{\v{r}}{\'{i}} Jaro{\v{s}} and
	T. Ben Cox},
   title = {Rapid calculation of acoustic fields from
	arbitrary continuous-wave sources},
   pages = {529--537},
   journal = {The Journal of the Acoustical Society of America},
   volume = {2018},
   number = {143},
   year = {2018},
   ISSN = {1520-8524},
   doi = {10.1121/1.5021245},
   language = {english},
   url = {http://www.fit.vutbr.cz/research/view_pub.php.en?id=11411}
}

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