Robert Hickling
Wei Wei
Natl. Ctr. for Phys. Acoust., Univ. of Mississippi, University, MS 38677
Richard Raspet
Univ. of Mississippi, University, MS 38677
Good spatial resolution of a sound source can be achieved with the four closely spaced transducers in a vector sound-intensity probe. In contrast, a receiving array, generally requires an extensive distribution of transducer elements. Experimental results are presented that demonstrate the ability of a vector probe to determine the direction of a sound source in water, both without and with noise interference. Measurements of the sound-intensity vector, or sound-power flux, were performed using the cross-spectral relation. Spectral subtraction and averaging over the frequency range of a source, were found to be effective tools for determining the direction of the source when there is interference and background noise.