Electroacoustics

A key part of the modern communication society, electroacoustic devices such as microphones and loudspeakers are used everywhere from cars and mobile phones to homes and sports arenas. This modern, accessible text explains the key scientific and engineering principles behind their design. It also examines the compromises that are necessary when designing transducers for use in the real world. The book covers both traditional audio and ultrasonic transducers and includes up-to-date material on arrays, radiation impedance, loudspeaker enclosure design, and more.

Mendel Kleiner is Professor Emeritus at Chalmers University of Technology, Gothenburg, Sweden, and head of the Chalmers Room Acoustics Group. Before his retirement, Dr. Kleiner taught room acoustics, audio, electroacoustics, and ultrasonics in the Chalmers Master Program on Sound and Vibration in the Division of Applied Acoustics. After retiring, he continues his research in acoustics, as well as teaching and consulting. He has authored or coauthored more than 55 publications and 110 papers, including two books. He has presented many keynote lectures, led courses at international conferences on acoustics and noise control, and organized an international conference on acoustics. His main research areas include electroacoustics and audio, computer simulation of room acoustics, electroacoustic room acoustics enhancement, room acoustics of auditoria and small rooms, sound and vibration measurement technology, product sound quality, psychoacoustics, and musical acoustics. He is a fellow of the Acoustical Society of America, serves on the Audio Engineering Society's Standards Committee on Acoustics, and was chair of its Technical Committee on Acoustics and Sound Reinforcement for 20 years.

Introduction. Introduction to Electroacoustic Systems. Sound and Its Properties. Waves in Membranes and Plates. Circuits and Circuit Components. Electromechanical Analogies. Electroacoustical Analogies. Conversion between Analogies. Transducer Operating Principles. Radiation and Impedance. Sound Source and Acoustic Environment. Directivity. Microphone and Sound Field. Microphones. Electrodynamic Loudspeaker Drivers. Baffle and Box. Vented Box Loudspeakers. Transmission Line Loudspeakers. Horns. Gradient Loudspeakers. Drivers Using Flexible Diaphragms. Multiway Loudspeakers. Active Loudspeakers. Headphones and Earphones. High-Frequency Transducers. Appendix A: Introduction to Electric Components and Classic Circuit Theory. Appendix B: Filters and Filter Functions. Appendix C: Magnetic Fields and Forces. Appendix D: Time-Domain Approach to Directivity. Appendix E: Sound-Absorbing Materials. Appendix F: Resonance in Boxes and Rooms. Appendix G: Level Definitions. Index.