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Originally published in this format with this foreword in 1992, this volume contains Accountics: The Office Magazine from April 1898 to December 1899.
The interaction of acoustic fields with submerged elastic structures, both by propagation and scattering, is being investigated at various institutions and laboratories world-wide with ever-increasing sophistication of experiments and analysis. This book offers a collection of contributions from these research centers that represent the present state-of-the-art in the study of acoustic elastic interaction, being on the cutting edge of these investigations. This includes the description of acoustic scattering from submerged elastic objects and shells by the Resonance Scattering Theory of Flax, Dragonette and Überall, and the interaction of these phenomena in terms of interface waves. It also includes the use of this theory for the purpose of inverse scattering, i.e. the determination of the scattered objects properties from the received acoustic backscattered signals. The problem of acoustically excited waves in inhomogeneous and anisotropic materials, and of inhomogeneous propagating waves is considered. Vibrations and resonances of elastic shells, including shells with various kinds of internal attachments, are analyzed. Acoustic scattering experiments are described in the time domain, and on the basis of the Wigner-Ville distribution. Acoustic propagation in the water column over elastic boundaries is studied experimentally both in laboratory tanks, and in the field, and is analyzed theoretically. Ultrasonic nondestructive testing, including such aspects like probe modelling, scattering by various types of cracks, receiving probes and calibration by a side-drilled hole is also studied in details.A comprehensive picture of these complex phenomena and other aspects is presented in the book by researchers that are experts in each of these domains, giving up-to-date accounts of the field in all these aspects.
Architectural Acoustics, Second Edition presents a thorough technical overview of the discipline, from basic concepts to specific design advice. Beginning with a brief history, it reviews the fundamentals of acoustics, human perception and reaction to sound, acoustic noise measurements, noise metrics, and environmental noise characterization. In-depth treatment is given to the theoretical principles and practical applications of wave acoustics, sound transmission, vibration and vibration isolation, and noise transmission in floors and mechanical systems. Chapters on specific design problems demonstrate how to apply the theory, including treatment of multifamily dwellings, office buildings, rooms for speech, rooms for music, multipurpose rooms, auditoriums, sanctuaries, studios, listening rooms, and the design of sound reinforcement systems. Detailed figures illustrate the practical applications of acoustic principles, showing how to implement design ideas in actual structures. This compendium of theoretical and practical design information brings the relevant concepts, equations, techniques, and specific design problems together in one place, including both fundamentals and more advanced material. Practicing engineers will find it an invaluable reference for their daily work, while advanced students will appreciate its rigorous treatment of the basic building blocks of acoustical theory. - Considered the most complete resource in the field – includes basic fundamental relations, derived from first principles, and examples needed to solve real engineering problems. - Provides a well-organized text for students first approaching the subject as well as a reliable reference for experienced practitioners looking to refresh their technical knowledge base. - New content for developing professionals includes case studies and coverage of specific focus areas such as audio visual design, theaters, and concert halls.
Originally published in this format and including this Foreword in 1992, this volume contains Accountics: The Office Magazine from April 1987 to March 1898. Accountics contains technical papers reflecting issues of the times, photo portraits and biographical sketches of leaders, rosters of organizations, news items, announcements, correspondence and professional advertisements.
This is an encyclopedic treatment of guitar adjustment, maintenance and repair. Illustrated with line drawings and photographs, and written in a straightforward style, the book takes the reader on a guided tour of the acoustic guitar's various parts and th
Now, more than ever, your organization needs leaders who help people do their best work in an uber-connected, global, dynamic world. And the traditional approaches to leadership - and who is a leader - are sorely in need of updating.In Acoustic Leadership?, we'll uncomplicate the leadership puzzle and get back to the roots of Simplicity, Authenticity, and Opportunity - powerful tools to help your organization get the results it needs with the people it already has.Acoustic Leadership is a fresh take on a familiar tune, a unique voice in an ocean of opinion. Rick uses the emotional power of music along with engaging storytelling, solid research, forward-thinking examples, and a musician's soul to connect us to leadership in a new way.Time to unlock and develop the leadership potential that is all around us - and within us.Formal title not required.
Long-awaited update and expansion of a widely recognised classic in the field by pioneering acoustics expert, Leo L. Beranek Builds upon Beranek's 1954 Acoustics classic by incorporating recent developments, practical formulas and methods for effective simulation Uniquely, provides the detailed acoustic fundamentals which enable better understanding of complex design parameters, measurement methods and data Brings together topics currently scattered across a variety of books and sources into one valuable reference Includes relevant case studies, real-world examples and solutions to bring the theory to life Acoustics: Sound Fields and Transducers is a modern expansion and re-working of Acoustics, the 1954 classic reference written by Leo L. Beranek. Updated throughout and focused on electroacoustics with the needs of a broad range of acoustics engineers and scientists in mind, this new book retains and expands on the detailed acoustical fundamentals included in the original whilst adding practical formulas and simulation methods for practising professionals. Benefitting from Beranek's lifetime experience as a leader in the field and co-author Tim Mellow's cutting-edge industry experience, Acoustics: Sound Fields and Transducers is a modern classic to keep close to hand in the lab, office and design studio. Builds on Beranek's 1954 Acoustics classic by incorporating recent developments, practical formulas and methods for effective simulationUniquely provides the detailed acoustic fundamentals, enabling better understanding of complex design parameters, measurement methods and dataBrings together topics currently scattered across a variety of books and sources into one valuable referenceIncludes relevant case studies, real-world examples and solutions to bring the theory to life.
The interaction of acoustic fields with submerged elastic structures, both by propagation and scattering, is being investigated at various institutions and laboratories world-wide with ever-increasing sophistication of experiments and analysis. This book offers a collection of contributions from these research centers that represent the present state-of-the-art in the study of acoustic elastic interaction, being on the cutting edge of these investigations. This includes the description of acoustic scattering from submerged elastic objects and shells by the Resonance Scattering Theory of Flax, Dragonette and Überall, and the interaction of these phenomena in terms of interface waves. It also includes the use of this theory for the purpose of inverse scattering, i.e. the determination of the scattered objects properties from the received acoustic backscattered signals. The problem of acoustically excited waves in inhomogeneous and anisotropic materials, and of inhomogeneous propagating waves is considered. Vibrations and resonances of elastic shells, including shells with various kinds of internal attachments, are analyzed. Acoustic scattering experiments are described in the time domain, and on the basis of the Wigner-Ville distribution. Acoustic propagation in the water column over elastic boundaries is studied experimentally both in laboratory tanks, and in the field, and is analyzed theoretically. Ultrasonic nondestructive testing, including such aspects like probe modelling, scattering by various types of cracks, receiving probes and calibration by a side-drilled hole is also studied in details.A comprehensive picture of these complex phenomena and other aspects is presented in the book by researchers that are experts in each of these domains, giving up-to-date accounts of the field in all these aspects.
Principles of Musical Acoustics focuses on the basic principles in the science and technology of music. Musical examples and specific musical instruments demonstrate the principles. The book begins with a study of vibrations and waves, in that order. These topics constitute the basic physical properties of sound, one of two pillars supporting the science of musical acoustics. The second pillar is the human element, the physiological and psychological aspects of acoustical science. The perceptual topics include loudness, pitch, tone color, and localization of sound. With these two pillars in place, it is possible to go in a variety of directions. The book treats in turn, the topics of room acoustics, audio both analog and digital, broadcasting, and speech. It ends with chapters on the traditional musical instruments, organized by family. The mathematical level of this book assumes that the reader is familiar with elementary algebra. Trigonometric functions, logarithms and powers also appear in the book, but computational techniques are included as these concepts are introduced, and there is further technical help in appendices.
This paper describes the results of current research at DREA in which techniques of optimum array processing are being applied to active sonar. We are presenting these results at the Advanced Study Institute in order to illustrate some actual applications for such processing and to point out some of the practical considerations which arise in real systems. In particular, the paper concerns the problems which arise when the individual sensor elements have a complicated directivity pattern themselves. This is a common phenomenon in active systems where the receiving sensors are complex resonant structures and are housed in a dome or towed body presenting various baffling and diffraction effects. Most treatments of array processing consider ideal elements which have well behaved directivity properties and are transparent to the field. The results of this paper show that where these properties are not met, careful in situ array measurements are required, and even with such measurements practical array gains may not be as good as predictions based on ideal sensors.