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The Journal of the Acoustical Society of America, 2001
Ambient Noise (AN) research during World War II was facilitated by the availability of calibrated instruments and motivated by the necessity to understand AN levels in coastal waters. The state-of-the-art was reviewed by Knudsen in 1948 and later by Pryce and Urick in 1954.
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Ambient Noise (AN) research during World War II was facilitated by the availability of calibrated instruments and motivated by the necessity to understand AN levels in coastal waters. The state-of-the-art was reviewed by Knudsen in 1948 and later by Pryce and Urick in 1954.
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Spatial filtering in ambient noise interferometry
The Journal of the Acoustical Society of America, 2014Theoretically, the empirical Green's function between a pair of receivers can be extracted from the cross correlation of the received diffuse noise. The diffuse noise condition rarely is met in the ocean and directional sources may bias the Green's function.
Olivier, Carrière +2 more
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GEOACOUSTIC INVERSION OF AMBIENT NOISE: A SIMPLE METHOD
Acoustical Oceanography 2001, 2002The vertical directionality of ambient noise is strongly influenced by seabed reflections. Therefore, potentially, geoacoustic parameters can be inferred by inversion of the noise. In this approach, using vertical array measurements, the reflection loss is found directly by comparing the upward- with the downward-going noise.
Harrison, C.H., Simons, D.G.
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Ambient Noise Is "The New Secondhand Smoke"
Acoustics Today, 2019Ambient noise is “the new secondhand smoke.” Like secondhand smoke, excessive ambient noise is not just a nuisance but is a health and public health problem for millions of Americans. Excessive ambient noise causes hearing loss; disrupts sleep, function, and communication; and causes non-auditory health effects including cardiovascular disease and ...
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Target detection and location with ambient noise
The Journal of the Acoustical Society of America, 2008By placing a vertical array in an ambient noise field and forming an upward and a downward beam one obtains two time series which can be cross correlated to reveal a subbottom profile of the seabed [Siderius et al., J. Acoust. Soc. Am. 120, 1315–1323 (2006)]. Here the cross-correlation approach is applied to the location in range and bearing of a point
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Robustness and constraints of ambient noise inversion
The Journal of the Acoustical Society of America, 2008One of the most dominant sources of error in the estimation of sonar performance in shallow water is the geoacoustic description of the sea floor. As reviewed in this paper, various investigators have studied the possible use of ambient noise to infer some key parameters such as the critical angle, geoacoustic properties, or bottom loss.
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Speech Communications as Limited by Ambient Noise
The Journal of the Acoustical Society of America, 1964Speech-intelligibility scores as a function of noise level are studied for face-to-face, sound-powered-phone, and amplified speech (earphone and loudspeaker) communication conditions. The speech-interference level (SIL) for octaves of noise centered at 500, 1000, and 2000 cps (0.5/1/2) is used as the measure of noise level. By using this noise measure,
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