LOCATING SOUND SOURCES WITH VECTOR SOUND-INTENSITY PROBES, USING POLYNOMIAL CONTINUATION

Vector sound intensity (i.e., sound-power flow per unit area) can be u sed to locate sound sources. In a previous paper [J. Acoust. Sec. Am. 97, 856-866 (1995)] it was shown experimentally that the direction of a source can be determined with a vector sound-intensity probe within +/-2 degrees. It was also shown that the directions of two continuous, noncoherent sources can be found with a single sound-intensity probe, using the spectral characteristics of the sources and/or spectral sub traction. In the present theoretical paper, it is demonstrated that a system of two vector probes can determine both the spatial coordinates and the sound-power output of two monopole sources through numerical solution of a set of nonlinear equations by the method of polynomial c ontinuation. This procedure can be extended to a greater number of sou rces and an equal number of probes. (C) 1996 Acoustical Society of Ame rica.