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:

1989-11-13

Pagination or Media Count:

12.0

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