Compensation for spectral variance in scan-based planar acoustical holography Conference Paper

abstract

• Multi-reference, scan-based Acoustical Holography is a useful measurement technique when insufficient microphones are available to measure a complete hologram at once. When the sound sources are stationary, the whole hologram can be constructed by joining together sub-holograms captured using a relatively small scan array. Here that approach is extended by the development of a formulation that explicitly includes the acoustical transfer functions between the reference microphones and the scanning microphones. Based on those expressions, a compensation procedure of spectral variance due to source-non-stationarity is proposed. It has been verified both numerically and experimentally that this procedure can help suppress spatially distributed noise caused by the source level non-stationarity that is always present in a measurement.

authors

• Kim, Yong Joe

published proceedings

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference

author list (cited authors)

• Kwon, H. S., Kim, Y. J., Bolton, J. S., Suh, J. G., Park, J. H., & Suh, S. J.

complete list of authors

• Kwon, HS||Kim, YJ||Bolton, JS||Suh, JG||Park, JH||Suh, SJ

publication date

• May 2002

published in

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference  Journal

start page

• 520

end page

• 524

URL

• http://koreascience.kr/article/CFKO200211922773664.page