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2018 | Book

Descriptions of Sound Read chapter Read first chapter

Acoustics-A Textbook for Engineers and Physicists

Volume I: Fundamentals

Author: Jerry H. Ginsberg

Publisher: Springer International Publishing

Part of: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik" , Springer Professional "Wirtschaft"

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About this book

This graduate and advanced undergraduate textbook systematically addresses all core topics in physical and engineering acoustics. Written by a well-known textbook author with 39 years of experience performing research, teaching, and mentoring in the field, it is specially designed to provide maximum support for learning. Presentation begins from a foundation that does not assume prior study of acoustics and advanced mathematics. Derivations are rigorous, thoroughly explained, and often innovative. Important concepts are discussed for their physical implications and their implementation. Many of the examples are mini case studies that address systems students will find to be interesting and motivating for continued study. Step-by-step explanations accompany example solutions. They address both the significance of the example and the strategy for approaching it. Wherever techniques arise that might be unfamiliar to the reader, they are explained in full. Volume I contains 186 homework exercises, accompanied by a detailed solutions manual for instructors. This text, along with its companion, Volume II: Applications, provides a knowledge base that will enable the reader to begin undertaking research and to work in core areas of acoustics.

Table of Contents

Frontmatter
Chapter 1. Descriptions of Sound
Abstract
Acoustics is the science of sound. For most people, the word “sound” is synonymous with “hearing,” but the realm of acoustics is far greater than phenomena associated with audible signals. The signals we hear are sound waves, in which pressure fluctuates. Hearing is a complex process of detecting and decoding these signals. Our ability to hear is as marvelous as any of our other senses. Indeed, no mechanical device can match the auditory capability of the average person. Thus, it might be appropriate to say that those of us who have an undiminished ability to hear are already acoustical experts. Many individuals take this sense for granted, but the mere fact that you are reading this book indicates that you have some awareness of sound as a basic experience that needs to be better understood. Our emphasis will be ways that sound is generated and modified by the environment in which it occurs. The topics in this text are grounded in physics and mathematics. However, the way we interpret sound cannot be ignored because it dictates the properties of a sound signal that we must characterize and evaluate. Understanding this aspect of acoustics requires expertise in biology and psychology.
Jerry H. Ginsberg
Chapter 2. Plane Waves: Time Domain Solutions
Abstract
Now that we have identified the significant properties of an acoustic signal we may address two fundamental questions: How was the signal generated at its source? How was the signal modified as it traveled from its source to the location where it was observed? These questions often are closely related. Generation of sound is usually associated with oscillation of another medium that shares a surface with the fluid in which the sound is observed.
Jerry H. Ginsberg
Chapter 3. Plane Waves: Frequency-Domain Solutions
Abstract
The frequency domain now becomes the lens for our study of plane waves. We will not rely on prior developments in the time domain, such as the d’Alembert solution and the ensuing wave image construction technique. The primary reason for pursuing the analysis in a self-contained manner is that it will prepare us for the study of multidimensional phenomena, for which a time-domain solution might not be available as a guide.
Jerry H. Ginsberg
Chapter 4. Principles and Equations for Multidimensional Phenomena
Abstract
We will not analyze new phenomena in this chapter, nor will we develop new analytical techniques. Rather, our objective is to create the foundation for study of a variety of phenomena that do not fit the planar wave model. One possible difference is that the wavefront, which is the locus of points at which the acoustic disturbance was generated at a common time, is not planar.
Jerry H. Ginsberg
Chapter 5. Interface Phenomena for Planar Waves
Abstract
Our attention now turns to situations where a plane wave propagates obliquely relative to a planar interface with another medium. The consequence will be a wave that is somewhat different from the one encountered in a one-dimensional waveguide. A wave might also be transferred into the receiving medium. The analyses will employ Cartesian coordinates aligned with the boundary to describe the multidimensional phenomena. Each topic is important for a variety of applications, such as noise control for wall design. Each topic represents an advance toward our goal of fully understanding how acoustical waves behave.
Jerry H. Ginsberg
Chapter 6. Spherical Waves and Point Sources
Abstract
Many signals have wavefronts that are not planar. The simplest to analyze are the waves generated by a vibrating spherical surface. Although a vibrating sphere is not frequently encountered in practice, the ability to generate solutions for a variety of situations makes that configuration extremely useful, both for verifying numerical techniques and for exploring fundamental issues.
Jerry H. Ginsberg
Correction to: Acoustics—A Textbook for Engineers and Physicists
Jerry H. Ginsberg
Backmatter
Metadata
Title
Acoustics-A Textbook for Engineers and Physicists
Author
Jerry H. Ginsberg
Copyright Year
2018
Electronic ISBN
978-3-319-56844-7
Print ISBN
978-3-319-56843-0
DOI
https://doi.org/10.1007/978-3-319-56844-7

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