The branch of physics which deals with the study of mechanical waves in liquids, gases, and solids which includes topics such as vibration, sound, ultrasound, and infrasound is known as acoustics. It comprises the production, transmission, and effects of sound including the biological and psychological effects, and the qualities of a room that determine its character with respect to auditory effects. The application of acoustics is present in almost all aspects of modern society with the most common being the audio and noise control industries. It has many subdisciplines such as archaeoacoustics, aeroacoustics, acoustic signal processing, architectural acoustics, bioacoustics, electroacoustics, etc. This book outlines the processes and applications of acoustics in detail. It strives to provide a fair idea about this discipline and to help develop a better understanding of the latest advances within this field. This book will provide comprehensive knowledge to the readers.