Reconstruction of the free-field radiation from a vibrating structure based on measurements in a noisy environment

• DOI: 10.1121/1.4819118
• Publication Date: 2013-10-05T02:37:29Z
• Authors: Chuan-Xing Bi; Ding-Yu Hu; Yong-Bin Zhang; J. Stuart Bolton
• Keywords: Free field; Acoustic Holography; Particle velocity; Source field

In a noisy environment, the sound field of source is composed three parts, which are: The that would be radiated by target into free space, incoming from disturbing sources or reflections, and scattered created wave falling on source. To accurately identify with nearfield acoustic holography in situation, last two parts must removed mixed field. previous study, method for recovering environment was proposed based equivalent measurements pressure [J. Acoust. Soc. Am. 131(2), 1260–1270 (2012)]. present paper, modified allowing input data to particle velocity instead pressure. An experiment carried out examine both pressure- velocity-based methods, performance methods compared. It found are capable reconstructing free-field made but shows large benefit reconstruction velocity.