The branch of physics that focuses on the study of mechanical waves in gases, liquids and solids is referred to as acoustics. It includes topics such as vibration, sound, infrasound and ultrasound. Acoustics is used in numerous industries such as audio and noise control industries. It is also used in various other sectors such as medicine, architecture, industrial production and warfare. A few of the major sub-disciplines of acoustics are archaeoacoustics, architectural acoustics, aeroacoustics and psychoacoustics. Archaeoacoustics involves the testing of the acoustic properties of prehistoric sites. Architectural acoustics seeks to control and regulate sound within a building. Aeroacoustics studies the noise produced by air movement and psychoacoustics deals with the perception of sounds by humans. This textbook provides comprehensive insights into the field of acoustics. Some of the diverse topics covered herein address the varied branches that fall under this category. This book will provide comprehensive knowledge to the readers.