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Author : John Donald Harris
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (318 download)
Download or read book NSMRL Calibration of Microphones at Depth in Dry Hyperbaric Chambers written by John Donald Harris and published by . This book was released on 1980 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paul Francis Smith
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (318 download)
Download or read book Field Calibration of Two Types of Microphones in Hyperbaric Air written by Paul Francis Smith and published by . This book was released on 1990 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.3/5 (91 download)
Download or read book Report written by and published by . This book was released on 1990 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.E/5 ( download)
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 1402 pages
Book Rating : 4.E/5 ( download)
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1980 with total page 1402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (455 download)
Download or read book Development of a General Hearing Conservation Standard for Diving Operations: Research on Hearing-Conservation for Exposure to Noise in Dry Hyperbaric Environments: I. Basic Considerations and Preliminary Experiments written by and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Navy needs to control noise exposure in hyperbaric chambers and diving helmets but the applicability of existing hearing-conservation standards to those environments is uncertain. Consequently, a program of research has been undertaken to develop suitable control measures. The specific goals of the research described in this report were to develop means of insuring accurate calibrations of microphones and earphones in hyperbaric environments, to determine the feasibility of measuring valid auditory thresholds in the NSMRL hyperbaric facility, and to obtain preliminary data bearing on the effects of noise in compressed air on the ear. Condenser microphones were calibrated in compressed air to 10 atmospheres and the results were highly similar to previous studies. Providing care is used in handling them, and calibration are preformed in suitable gas it should not be necessary to calibrate condenser micro-phones in diving environments more than once a year for routine noise measurement (sound survey) purposes. Calibration studies should be undertaken to determine the performance of ceramic microphones that are less expensive and more rugged than condenser microphones for use in compressed air environments. Several earphones were also calibrated in compressed air but the results were not consistent for most earphones and instrumentation for in situ calibration of earphones on each dive should be developed. However, careful selection of earphones and pre- and post experiment calibrations may be relied upon for experiments in compressed air. It was demonstrated that with minimal precaution, valid auditory threshold measurements can be obtained in the NSMRL hyperbaric chamber. The ear appears to be less sensitive to noise in compressed air at 3 atm than it is in air at 1 atm if sound is measured in terms of sound pressure.
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ISBN 13 :
Total Pages : 736 pages
Book Rating : 4.3/5 (91 download)
Download or read book Physics Briefs written by and published by . This book was released on 1980 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 1124 pages
Book Rating : 4.:/5 (31 download)
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1982 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Technology Reports Centre (Great Britain)
Publisher :
ISBN 13 :
Total Pages : 620 pages
Book Rating : 4.F/5 ( download)
Download or read book R & D Abstracts written by Technology Reports Centre (Great Britain) and published by . This book was released on 1980 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 936 pages
Book Rating : 4.3/5 (129 download)
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paul Francis Smith
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (227 download)
Download or read book Field Calibration of Two Types of Microphones in Hyperbaric Air written by Paul Francis Smith and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The response of two microphones, one a condenser microphone and the other a diaphragm-activated piezoelectric ceramic microphone, were measured in compressed air at pressures as great as 810 kilopascals (8 atmospheres). The response of each microphone was compared to that of a hydrophone operated in air as a microphone. The results show that the two types of microphone respond similarly to high ambient pressure. Both types are less sensitive to sound pressure in compressed air than in air at normal pressures, and the frequency responses of both microphones are altered. The results are useful in the analyses of ambient noise measurements done during experiments in compressed air. Keywords: Microphones; Performance. (kt).
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ISBN 13 :
Total Pages : 988 pages
Book Rating : 4.:/5 (319 download)
Download or read book Government Reports Announcements written by and published by . This book was released on 1973 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Albert A. Harrison
Publisher : Springer Science & Business Media
ISBN 13 : 1461230128
Total Pages : 362 pages
Book Rating : 4.4/5 (612 download)
Download or read book From Antarctica to Outer Space written by Albert A. Harrison and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: From Antarctica to Outer Space: Life in Isolation and Confinement aims to revitalize and encourage behavioral research in spaceflight as well as in polar and comparable settings. It comprises a broad collection of papers that evolved from presentations at a three day conference entitled The Human Experience in Antarctica: Applications to Life in Space (The Sunnyvale Conference). This conference was co-sponsored by the Division of Polar Programs of the National Science Foundation and the National Aeronautics and Space Administration and held in 1987. The book provides, through firsthand accounts and research reviews, an introduction to the human facet in isolated and confined environments such as Antarctica, outer space, submarines, and remote national parks. The book discusses some of the theoretical issues underlying research on isolated and confined people, thus demonstrating the applicability of certain general theories of behavior. It also focuses on basic psychological and social responses to isolation and confinement. Studies whose primary purpose is to explore the effects of selection, training, and environmental design on human behavior and mission outcomes are discussed.
Author : Samuel Temkin
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 536 pages
Book Rating : 4.F/5 ( download)
Download or read book Elements of Acoustics written by Samuel Temkin and published by John Wiley & Sons. This book was released on 1981 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Naval Material Command
Publisher :
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.:/5 (31 download)
Download or read book System Certification Procedures and Criteria Manual for Deep Submergence Systems written by United States. Naval Material Command and published by . This book was released on 1976 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gabriel M. Rebeiz
Publisher : John Wiley & Sons
ISBN 13 : 0471462888
Total Pages : 512 pages
Book Rating : 4.4/5 (714 download)
Download or read book RF MEMS written by Gabriel M. Rebeiz and published by John Wiley & Sons. This book was released on 2004-02-06 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrasmall Radio Frequency and Micro-wave Microelectromechanical systems (RF MEMs), such as switches, varactors, and phase shifters, exhibit nearly zero power consumption or loss. For this reason, they are being developed intensively by corporations worldwide for use in telecommunications equipment. This book acquaints readers with the basics of RF MEMs and describes how to design practical circuits and devices with them. The author, an acknowledged expert in the field, presents a range of real-world applications and shares many valuable tricks of the trade.
