An outline of a proposed acoustic holography system based on the Helmholtz equation–least-squares (HELS) method

• Published in: The Journal of the Acoustical Society of America 2000-11, Vol.108 (5_Supplement), p.2504-2504
• Main Authors: Rayess, Nassif E., Wu, Sean F.
• Format: Article
• Language: English
• ISSN: 0001-4966; 1520-8524
• DOI: 10.1121/1.4743251

The Helmholtz equation–least-squares (HELS) method [Wang and Wu, J. Acoust. Soc. Am. 102, 2020–2032 (1997); Wu, J. Acoust. Soc. Am. 107, 2511–2522 (2000)] has been proven a reliable acoustic holography method. The main advantages are its simplicity in formulations, flexibility in measurement locations, and uniformity in algorithm for a variety of source geometry and conditions. This paper presents a complete acoustic holography system based on the HELS method that makes full use of these advantages. This system has been under development as part of an ongoing research at the Acoustics, Vibration, and Noise Control Laboratory at Wayne State University. The physical setup will be described which includes the front-end multichannel data acquisition system and the associated hardware. Experimental results on reconstruction of the radiated acoustic fields from a complex source using this system will be demonstrated. Comparisons of this system with other acoustic holography systems currently available will be made. [Work supported by NSF.]