Results 261 to 270 of about 361,928 (300)
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Ambient noise suppression circuit
The Journal of the Acoustical Society of America, 1999An ambient noise suppression electrical circuit to be used with a voice communication terminal comprising a gain control amplifier, whose input is a microphone, and a peak-hold circuit that includes a band-pass amplifier that amplifies a specified frequency range of the output signals of the microphone, a peak detection circuit that produces signals in
Noboru Yamaguchi, Masao Konomi
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The Journal of the Acoustical Society of America, 1989
Ambient noise data along with oceanographic, meteorological, and remote sensing data were collected during the Marginal Ice Zone Experiment in March and April 1987 in the Greenland Sea. The experiment was designed to study how ambient noise was generated by ice kinematics, ice edge eddies, and wave propagation into the ice pack. Sonobuoys were deployed
Ola M. Johannessen +4 more
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Ambient noise data along with oceanographic, meteorological, and remote sensing data were collected during the Marginal Ice Zone Experiment in March and April 1987 in the Greenland Sea. The experiment was designed to study how ambient noise was generated by ice kinematics, ice edge eddies, and wave propagation into the ice pack. Sonobuoys were deployed
Ola M. Johannessen +4 more
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The Journal of the Acoustical Society of America, 1978
ANS has been designed and developed by NUWES as a permanently installed system for the collection, recording, and processing of underwater ambient noise data for support of underwater weapon proofing operations. This system, now operational, is located at the three dimensional (3-D) tracking range located at Nanoose, British Columbia, Canada.
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ANS has been designed and developed by NUWES as a permanently installed system for the collection, recording, and processing of underwater ambient noise data for support of underwater weapon proofing operations. This system, now operational, is located at the three dimensional (3-D) tracking range located at Nanoose, British Columbia, Canada.
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Intrusive Noise and the Ambient Noise Environment
The Journal of the Acoustical Society of America, 1970The extent to which an intruding noise source penetrates the general ambient noise environment in a community, serves as a useful indicator of the likely reaction of the community to that noise source. Available techniques using this approach generally provide a measure of community response based upon the absolute difference in level between the ...
R. J. Sawley, C. G. Gordon
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Seismic, Ambient Noise Correlation
2011No abstract.
Campillo, Michel +2 more
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The Journal of the Acoustical Society of America, 1965
Measurements of the space-time crosscorrelation of ambient sea noise were made with pairs of hydrophones, separated vertically between 2–40 ft, at a depth of 14 500 ft, in the frequency range from 100 to 1200 cps. Previous results at sea state 5 [J. Acoust. Soc. Am. 38, 146–148(L) (1965)] were extended and now include lower sea states.
Elizabeth M. Arase, T. Arase
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Measurements of the space-time crosscorrelation of ambient sea noise were made with pairs of hydrophones, separated vertically between 2–40 ft, at a depth of 14 500 ft, in the frequency range from 100 to 1200 cps. Previous results at sea state 5 [J. Acoust. Soc. Am. 38, 146–148(L) (1965)] were extended and now include lower sea states.
Elizabeth M. Arase, T. Arase
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1967
Abstract : The objective of this report is to provide information on deep ocean ambient noise which can be used in sonar system design and analysis. Guidelines are given for estimating wind-generated noise, oceanic ship traffic noise, biological noise levels, and the composite ambient noise background.
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Abstract : The objective of this report is to provide information on deep ocean ambient noise which can be used in sonar system design and analysis. Guidelines are given for estimating wind-generated noise, oceanic ship traffic noise, biological noise levels, and the composite ambient noise background.
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1991
Abstract : Participation in a VLF ambient noise experiment east of the Blake Plateau in August 1990. Over the last several years, the Marine Physical Laboratory has developed an array of 12 freely-drifting Swallow floats for use in VLF ambient noise and signal propagation experiments.
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Abstract : Participation in a VLF ambient noise experiment east of the Blake Plateau in August 1990. Over the last several years, the Marine Physical Laboratory has developed an array of 12 freely-drifting Swallow floats for use in VLF ambient noise and signal propagation experiments.
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