The third edition of E ngineering Noise Control has been thoroughly revised, updated and extended. Each chapter contains new material, much of which is not available elsewhere. The result is a comprehensive discussion of the theoretical principles and concepts of acoustics and noise control, a detailed discussion of the hearing mechanism, noise measuring instrumentation and techniques, noise criteria, sound source characterization and emission, outdoor sound propagation, sound in rooms, sound transmission through partitions, enclosure design, dissipative and reactive mufflers, vibration isolation, equipment sound power emission calculations and active noise cancellation. Completely new material includes speed of sound calculations in media with non-rigid boundaries, analysis of beating, explanation of the non-damping and half-octave shift phenomena of human hearing, a discussion of energy density and its measurements, direct measurement of particle velocity, definitions of a range of measures used to quantify noise, hearing conversation program, addition of two more types of noise rating curves (NCB and RNC), a more extensive discussion of outdoor sound propagation including shadow
Table of Contents
Preface; 1. Fundamentals and Basic Terminology; 2. The Human Ear; 3. Instrumentation for Noise Measurement and Analysis; 4. Criteria; 5. Sound Sources and Outdoor Sound Propagation; 6. Sound Power, Its Use and measurement; 7. Sound in Enclosed Places; 8. Partitions, Enclosures and Barriers; 9. Muffler Devices; 10. Vibration Control; 11. Sound Power and Sound Pressure Level Estimation Procedures; 12. Active Noise Control; 13. Survey of Analytical Techniques for the Estimation of Sound Power Levels; Appendix A. Wave Equation Derivation; Appendix B. Properties of Materials; Appendix C. Acoustical Properties of Porous Materials; Appendix D. Frequency Analysis. References. List of Acoustical Standards. Glossary of Symbols; Index.
David Bies is and Honorary Research Fellow at the University of Adelaide's Department of Mechanical Engineering. He has previously worked as a senior consultant in industry. Colin Hansen is a Professor and Head of Department of Mechanical Engineering at the University of Adelaide and has also had a long career as a consultant. His two other books are on the topic of active noise control.