Underwater Electroacoustic Measurements
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Underwater Electroacoustic Measurements
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Author : Robert J. Bobber
language : en
Publisher:
Release Date : 1970
Underwater Electroacoustic Measurements written by Robert J. Bobber and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Electro-acoustics categories.
Underwater Electroacoustic Measurements
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Author : Robert J. Bobber
language : en
Publisher:
Release Date : 1970
Underwater Electroacoustic Measurements written by Robert J. Bobber and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Electro-acoustics categories.
The electrical and acoustical measurements described in this book are those required to calibrate, test, or evaluate an underwater electroacoustic transducer and to enable one, indirectly, to produce or detect and measure an underwater acoustic signal, usually in terms of its acoustic pressure. These measurements will be referred to collectively as underwater electroacoustic measurements.
Underwater Electroacoustic Transducers
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Author : D. Stansfield
language : en
Publisher:
Release Date : 1990
Underwater Electroacoustic Transducers written by D. Stansfield and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Electroacoustic transducers categories.
This book attempts to describe the principles and practical aspects involved in the design of underwater electroacoustic transducers. It aims to improve the user's understanding of the significance of the various characteristics which need to be defined in specifying his transducer requirement.
Near Field Calibration Of Underwater Electroacoustic Transducers
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Author : Robert D. Marciniak
language : en
Publisher:
Release Date : 1975
Near Field Calibration Of Underwater Electroacoustic Transducers written by Robert D. Marciniak and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with categories.
A near-field acoustic measurement technique which provides the basis for accurately computing the far-field radiation characteristics of underwater sound transducers is developed, implemented and evaluated. The analysis is based on evaluating a form of the Helmholtz integral which utilizes a Green's function with particular boundary conditions for the solution. That is, the Green's function vanishes over the surface of integration, thereby requiring only knowledge of the near-field acoustic pressure for computing the far-field radiation. An experimental program is conducted to provide corroboration of the near-field technique. Design and construction details of the completely automated near-field measurement system, including the near-field acoustic sensors, the pulsed Amplitude-Phase electronic measurement system, and the Digital Scanner System are presented. Appropriate supporting software, in the form of a digital computer program, is provided for performing the data preparation and final far-field computations. Results of conventional far-field acoustic measurements at various frequencies on four different types of test transducers are presented.
New Transducers In Underwater Noise Measurement
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Author : Peter Walmsley
language : en
Publisher:
Release Date : 1985
New Transducers In Underwater Noise Measurement written by Peter Walmsley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
Determination of the acoustic signatures of sea-going vessels reduces to a source level measurement of a monopole source in a fluid medium bounded by the surface and sea bed. Present techniques use single ceramic hydrophones whose signals are complicated by multipath interference. More accurate measurements can be made us ang spatial diversity methods but practical arrays of ceramic elements are presently too costly. This thesis investigates new materials for hydrophone transduction and their application to source level measurements in a bounded medium. ....
Procedures For Calibration Of Underwater Electroacoustic Transducers
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Author :
language : en
Publisher:
Release Date : 2012
Procedures For Calibration Of Underwater Electroacoustic Transducers written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Transducers categories.
This standard establishes measurement procedures for calibrating underwater electroacoustic transducers. It is a revision of American National Standard S1.20-1988 (R2003). Both primary and secondary calibration procedures are specified for frequencies from a few hertz to a few megahertz.
Transducers And Arrays For Underwater Sound
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Author : Charles Sherman
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-01-05
Transducers And Arrays For Underwater Sound written by Charles Sherman and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-01-05 with Technology & Engineering categories.
The most comprehensive book on electroacoustic transducers and arrays for underwater sound Includes transducer modeling techniques and transducer designs that are currently in use Includes discussion and analysis of array interaction and nonlinear effects in transducers Contains extensive data in figures and tables needed in transducer and array design Written at a level that will be useful to students as well as to practicing engineers and scientists
Twenty Years Of Underwater Electroacoustic Standards
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Author :
language : en
Publisher:
Release Date : 1974
Twenty Years Of Underwater Electroacoustic Standards written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with categories.
The report is intended as a ready reference concerning the standard underwater sound transducers stocked by the Underwater Sound Reference Division. It also summarizes a few of the highlights of many years spent in investigating materials, design, and construction techniques to satisfy the requirements of widely varying underwater sound measurement problems. Twenty-nine appendices present descriptions and performance characteristics of as many individual transducer types.
Underwater Sound Measurements At High Hydrostatic Pressures
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Author : Ward L. Paine
language : en
Publisher:
Release Date : 1949
Underwater Sound Measurements At High Hydrostatic Pressures written by Ward L. Paine and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1949 with categories.
Electroacoustic transducers used in underwater sound work may exhibit appreciable changes in transmitting and receiving responses when operated under high hydrostatic pressures. Changes in response as great as 6 db at 300 pounds per square inch have been measured. Several curves which show the results of measurements on typical instruments are presented. Response hysteresis with direction of pressure change and shift of resonance frequency are two of the effects noted during tests at high pressures. The features of construction of two pressure-stable transducers which have been developed are given, and the transducer characteristics are shown in four Figures. (Author).
Modelling Acoustic Signals In The Calibration Of Underwater Electroacoustic Transducers In Reverberant Laboratory Tanks
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Author : S. P. Robinson
language : en
Publisher:
Release Date : 1999
Modelling Acoustic Signals In The Calibration Of Underwater Electroacoustic Transducers In Reverberant Laboratory Tanks written by S. P. Robinson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Measurement categories.