The Third Edition of Acoustics of Wood offers a comprehensive overview of advanced acoustical techniques for wood characterization and assessment. It stands as an authoritative guide on using ultrasound and acoustic emissions to assess and characterize wood's physical and mechanical properties. Divided into six parts, this extended and updated edition covers a broad spectrum of topics including ultrasonic wave propagation, nondestructive testing methods for wood characterization, and the innovative use of acoustics in quality assessment of wood products. It also explores the acoustic properties vital for musical instruments and the application of acoustics in preserving historically significant art objects and timber structures. With chapters on cutting-edge topics like artificial intelligence's role in wood acoustics, readers are invited to explore the intersection of tradition and technology. Targeted at professionals and researchers in materials science, engineering, and conservation, this edition is invaluable for those seeking to deepen their knowledge of wood's acoustic properties. Readers with a background in physics or engineering will find the discussions on ultrasonic techniques and acoustic emissions particularly enlightening. By bridging theoretical concepts with practical applications, this book not only enriches scientific understanding but also opens up new avenues for innovation in wood assessment and preservation.