Accession Number : ADD014453

Title :   Acoustic Intensity Probe.

Descriptive Note : Patent Application, Filed 13 Nov 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Ng, Kam W

Report Date : 13 Nov 1989

Pagination or Media Count : 12

Abstract : An acoustic intensity probe was developed to measure waterborne sound intensity levels using a two-hydrophone technique. The technique utilizes the cross-spectral density of signals from multiple closely spaced hydrophones. Planar (2-dimensional) and 3-dimensional arrays of hydrophones with symmetric and asymmetric configurations were developed to measure the acoustic intensity levels. This acoustic intensity probe combined with the two-hydrophone technique provides specific information revealing the acoustic energy distribution and propagation of noise sources in any acoustic environment. Patent applications. (JHD)

Descriptors :   *HYDROPHONES, *PATENT APPLICATIONS, *SOUND PRESSURE, ACOUSTIC SIGNALS, ACOUSTIC WAVES, ACOUSTICS, ASYMMETRY, CONFIGURATIONS, DENSITY, ENERGY, INTENSITY, NOISE(SOUND), PROBES, SIGNALS, SPECTRA, SYMMETRY

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE