Fundamentals of General Linear Acoustics

Finn Jacobsen 지음

Wiley 2013년 06월 04일 출간

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책소개

Acoustics deals with the production, control, transmission, reception, and effects of sound. Owing to acoustics being an interdisciplinary field, this book is intended to be equally accessible to readers from a range of backgrounds including electrical engineering, physics and mechanical engineering.This book introduces the fundamentals of acoustic wave motion. It addresses in a clear and systematic way some of the most difficult parts of acoustics for beginners, such as the widely different approximations due to the wide frequency range, the apparently arbitrary choice between the use of analytical solutions to the wave equation with boundary conditions, and the fundamentally different energy-based considerations used in noise control. As a result, it provides readers with a self-contained source of information on acoustics which can be used for self-study or as a graduate course text.Key features:Places an emphasis on detailed derivations based on the fundamental laws of physics and interpretations of the resulting formulas.Avoids, where possible, electrical and mechanical equivalent circuits, so as to make it accessible to readers with different backgrounds.Introduces duct acoustics, sound in enclosures, and sound radiation and scattering.Contains a set of appendices which includes material on signal analysis and processing as these tools are essential for the modern acoustician.

목차

About the Authors ixPreface xiList of Symbols xiii1 Introduction 12 Fundamentals of Acoustic Wave Motion 32.1 Fundamental Acoustic Concepts 32.2 The Wave Equation 53 Simple Sound Fields 113.1 Plane Waves 113.2 Sound Transmission Between Fluids 183.3 Simple Spherical Waves 224 Basic Acoustic Measurements 254.1 Introduction 254.2 Frequency Analysis 254.3 Levels and Decibels 294.4 Noise Measurement Techniques and Instrumentation 325 The Concept of Impedance 415.1 Mechanical Impedance 415.2 Acoustic Impedance 435.3 Specific Impedance, Wave Impedance and Characteristic Impedance 466 Sound Energy, Sound Power, Sound Intensity and Sound Absorption 496.1 Introduction 496.2 Conservation of Sound Energy 506.3 Active and Reactive Intensity 556.4 Measurement of Sound Intensity 616.4.1 Errors Due to the Finite Difference Approximation 636.4.2 Errors Due to Scattering 646.4.3 Errors Due to Phase Mismatch 646.5 Applications of Sound Intensity 686.5.1 Sound Power Determination 686.5.2 Noise Source Identification and Visualisation of Sound Fields 706.5.3 Transmission Loss of Structures and Partitions 706.5.4 Measurement of the Emission Sound Pressure Level 716.6 Sound Absorption 717 Duct Acoustics 757.1 Introduction 757.2 Plane Waves in Ducts with Rigid Walls 757.2.1 The Sound Field in a Tube Terminated by an Arbitrary Impedance 757.2.2 Radiation of Sound from an Open-ended Tube 827.3 Sound Transmission Through Coupled Pipes 867.3.1 The Transmission Matrix 877.3.2 System Performance 927.3.3 Dissipative Silencers 977.4 Sound Propagation in Ducts with Mean Flow 997.5 Three-dimensional Waves in Ducts with Rigid Walls 1017.5.1

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저자(글) Finn Jacobsen

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Finn Jacobsen, Department of Electrical Engineering, Technical University of Denmark (DTU)Currently an Associate Professor in the Department of Electrical Engineering at DTU, Dr. Jacobsen has more than twenty-five years' experience of teaching acoustics at MSc level, and more than 15 years' experience of teaching fundamentals of acoustics at undergraduate level. He was Associate Editor of Acustica united with Acta Acustica from 1995 to 2003, and section leader of the Handbook of Signal Processing in Acoustics (Springer, 2008). He has also contributed 6 chapters in various handbooks on acoustics; published approx. 90 journal papers and more than 100 conference papers.Peter Moslash;ller Juhl, Faculty of Engineering, University of Southern DenmarkDr. Juhl is currently an Associate Professor at the Institute of Technology and Innovation, University of Southern Denmark. He teaches both undergraduate and postgraduate courses in the field of acoustics which range from quite elementary acoustics and signal analysis for students of audiology to basic and advanced acoustics for engineering students as well as courses on mechanical vibrations and numerical acoustics. He has also taught basic courses on physics for both engineers and physicists.