Frequency domain expressions for the estimation of time-averaged acoustic energy density.
This 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.
Cazzolato
Ben S
BS
School of Mechanical Engineering, The University of Adelaide, SA 5005, Australia. benjamin.cazzolato@adelaide.edu.au
Ghan
Justin
J