Fourier Acoustics
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Fourier Acoustics
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Author : Earl G. Williams
language : en
Publisher: Academic Press
Release Date : 1999-06-16
Fourier Acoustics written by Earl G. Williams and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-06-16 with Mathematics categories.
Fourier Acoustics develops the theory of sound radiation completely from the viewpoint of Fourier analysis. This powerful perspective of sound radiation provides the reader with a comprehensive and practical understanding which will enable him or her to diagnose and solve sound and vibration problems of the 21st century. As a result of this perspective, Fourier Acoustics is able to present thoroughly and simply, for the first time in book form, the theory of nearfield acoustical holography, an important technique which has revolutionized the measurement of sound. The book includes: The physics of wave propagation and sound radiation in homogeneous media Acoustics, such as radiation of sound, and radiation from vibrating surfaces Inverse problems, for example the thorough development of the theory of nearfield acoustical holography Mathematics of specialized functions, such as spherical harmonics The author is an internationally recognized acoustician whose pioneering research in the field of nearfield acoustical holography has impacted acoustics research and development throughout the world. Dr. Williams' research has been formally recognized by NRL as one of its most innovative technologies over the past 75 years. Relying little on material outside the book, Fourier Acoustics will be invaluable as a graduate level text as well as a reference for researchers in academia and industry. The book is unique amongst acoustics texts, it is well illustrated and it includes exercises to enforce the theory.
A History Of The Acoustics Division Of The Naval Research Laboratory
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Author : Fred Tudor Erskine
language : en
Publisher:
Release Date : 2013
A History Of The Acoustics Division Of The Naval Research Laboratory written by Fred Tudor Erskine and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Naval research categories.
Advances In Underwater Acoustics Structural Acoustics And Computational Methodologies In 4 Volumes
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Author : Sean F Wu
language : en
Publisher: World Scientific
Release Date : 2025-04-29
Advances In Underwater Acoustics Structural Acoustics And Computational Methodologies In 4 Volumes written by Sean F Wu and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-04-29 with Technology & Engineering categories.
This set of volumes encompasses the study of acoustics to diverse environments ranging from underwater and marine environments, to structural and civil engineering, computational models and aerospace engineering. Each volume comprises peer-reviewed publications in the related field of acoustics from the past decade, arranged such as to review the existing literature, examine new methodologies and then explore novel applications of pioneering acoustic principles. With contributions by eminent acoustics researchers, this set holds key insights for fellow acoustics researchers and engineers of any field impacted by acoustic phenomena.Volume 1's review chapters summarise theories like geoacoustic inversion as well as criticism of the Biot theory of propagation in fluid-saturated porous solids, while the new methodologies shown range from an efficient and stable coupled-mode solution to a cell-based smoothed radial point interpolation method. The book concludes with promising applications like experimental evidence of horizontal refraction and bottom attenuation coefficient inversion.Volume 2 reviews topics including radiation boundary conditions for the Helmholtz equation, and analytical interpretation of the early literature on the theory of vibrations. The methodologies range from coupled boundary element and energy flow method as well as sound radiation of a line source. The work concludes with promising applications like Lamb Waves in a poroelastic plate and experimental validations of reconstructed excitation forces acting inside a solid enclosure.Volume 3 provides summaries of theories including the benchmark study on eigenfrequencies of fluid-loaded structures, and the Burton and Miller method, while the new methodologies presented range from a coupled boundary element and energy flow method, to an efficient approach to the simulation of acoustic radiation. The volume concludes with promising applications like a comparison of transient infinite elements and transient Kirchhoff integral methods, as well as a fast multi-frequency iterative acoustic boundary element method.Volume 4 depicts the context of conventional methodologies including short-wave components and Galbrun's equation, while its new methodologies range from radiation and outflow boundary conditions for direct computation of acoustic and flow disturbances to the effect of airfoil shape on trailing edge noise. The collection concludes with promising applications like helicopter noise predictions and conservative source interpolation methods for aeroacoustics.
Directivity Patterns For Room Acoustical Measurements And Simulations
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Author : Martin Pollow
language : en
Publisher: Logos Verlag Berlin GmbH
Release Date : 2015-09-09
Directivity Patterns For Room Acoustical Measurements And Simulations written by Martin Pollow and has been published by Logos Verlag Berlin GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-09-09 with Technology & Engineering categories.
The acoustics of rooms can be objectively described by the room impulse responses obtained for given transfer paths using measurement or simulation. In practice, the directionally dependent behavior of sources and receivers is often disregarded and thus assumed to be of omnidirectional type. In reality, however, these sources and receivers have specific directivity patterns, which are reported to induce audible differences. In this work a methodology to capture, analyze and process directivity patterns of sources and receivers is described. With the help of surrounding spherical microphone and loudspeaker arrays these directivity patterns are measured to be used in room acoustic applications. Room impulse responses with respect to specific directivity patterns can be realized using compact loudspeaker arrays with known directivity. Applying the results of directivity superposition to the set of measured room impulse responses, the acoustics for specific directivity patterns are found. Using a simulation of the room instead, source and receiver directivity patterns can be included in both wave based and particle based methods. The results of this work facilitate more authentic descriptions of room acoustics for specific source and receiver directivity patterns.
The Helmholtz Equation Least Squares Method
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Author : Sean F. Wu
language : en
Publisher: Springer
Release Date : 2014-09-22
The Helmholtz Equation Least Squares Method written by Sean F. Wu and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-22 with Technology & Engineering categories.
This book represents the HELS (Helmholtz equation least squares) theory and its applications for visualizing acoustic radiation from an arbitrarily shaped vibrating structure in free or confined space. It culminates the most updated research work of the author and his graduate students since 1997. The book contains six chapters. The first serves as a review of the fundamentals in acoustics and the rest cover five specific topics on the HELS theory.
Researches In Acoustics
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Author : Alfred Marshall Mayer
language : en
Publisher:
Release Date : 1874
Researches In Acoustics written by Alfred Marshall Mayer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1874 with Hearing categories.
Computational Acoustics Seismo Ocean Acoustics And Modeling
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Author : Ding Lee
language : en
Publisher: Elsevier Science & Technology
Release Date : 1990
Computational Acoustics Seismo Ocean Acoustics And Modeling written by Ding Lee and has been published by Elsevier Science & Technology this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Mathematics categories.
This 3-volume set contains contributions from different areas of Computational Acoustics. Covered are: - computational methods to solve acoustics problems (including aero-acoustics, seismo-acoustics, and ocean-acoustics) and, in general, wave propagation problems - computational aspects of the interface between aero-, seismo- and ocean-acoustics - new solution techniques that have been made possible with the advent of new computer architectures such as parallel computers, super (pipeline) computers, hypercubes, etc.
Review Of Progress In Quantitative Nondestructive Evaluation
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Author : Donald O. Thompson
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Review Of Progress In Quantitative Nondestructive Evaluation written by Donald O. Thompson 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 2012-12-06 with Technology & Engineering categories.
In this volume (parts 1 and 2) are contained the edited papers presented at the annual Review of Progress in Quantitative NDE held at the University of California, San Diego, August 1-6, 1982. This Review, possibly the most comprehensive annual symposium emphasizing both ongoing research and applications in quantitative NDE, was sponsored by the Center for Advanced NDE at the Ames Laboratory of the U. S. Department of Energy in cooperation with the Materials Laboratory of the Air Force Wright Aeronautical Laboratories and the Defense Advanced Research Projects Agency. Over 300 attendees representing various government agencies and the industrial and university communities participated in the technical presentations, poster sessions, and discussions. The symposium benefited from the insight of two keynote speak ers, Dr. Harris Burte of the Materials Laboratory, AFWAL, and Mr. Ward Rummel of the Martin Marietta Corporation, who presented complementary messages. Dr. Burte pointed out the need to identify "windows" to serve as guides for focusing NDE research. The "window" concept may be thought of as an opportunity for the application of NDE technology to an important problem and, through this application, to identify knowledge gaps which must be filled by generic research. This concept simultaneously provides a mechanism for the solution of a direct ap plication problem and a set of strong guidelines for generic research directions. Mr. Rummel called attention to the value of "lessons learned" from var.
The Journal Of The Acoustical Society Of America
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Author : Acoustical Society of America
language : en
Publisher:
Release Date : 2007
The Journal Of The Acoustical Society Of America written by Acoustical Society of America and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Acoustical engineering categories.
Acoustics
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Author : William Fishburn Donkin
language : en
Publisher:
Release Date : 1884
Acoustics written by William Fishburn Donkin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1884 with Sound categories.