Cazzolato, B.Ghan, J.2006-12-032006-12-032005Journal of the Acoustical Society of America, 2005; 117(6):3750-37560001-49661520-8524http://hdl.handle.net/2440/16611Copyright © 2005 Acoustical Society of AmericaThis paper builds on earlier work by the same authors to derive expressions for the time-averaged acoustic energy density in the frequency domain using the auto- and cross-spectral densities of multiple microphone elements. Expressions for the most common three-dimensional geometric arrangements are derived. Simplified expressions for use with two channel spectrum analysers are also presented.enFrequency domain expressions for the estimation of time-averaged acoustic energy densityJournal article002005042510.1121/1.19045050002297185000452-s2.0-2044439275155061Cazzolato, B. [0000-0003-2308-799X]