This book provides an expert introduction to audio forensics an essential specialty in modern forensic science equipping readers with the fundamental background necessary to understand and participate in this exciting and important field of study. Modern audio forensic analysis combines skills in digital signal processing the physics of sound propagation acoustical phonetics audio engineering and many other fields. Scientists and engineers who work in the field of audio forensics are called upon to address issues of authenticity quality enhancement and signal interpretation for audio evidence that is important to a criminal law enforcement investigation an accident investigation board or an official civil inquiry.Expertise in audio forensics has never been more important.