The book is appropriate for those seeking detailed information in the of acoustics. As it provides thorough insights into this field and its uses and technologies. Acoustics is concerned with the study of mechanical waves whether they are solids, gases or liquids. It also includes various topics like infrasound, vibration, ultrasound and sound. This text is a valuable compilation of topics, ranging from the basic to the most complex theories and principles in the field of acoustics. The various sub branches of this field like, bio-acoustics, architectural acoustics, aeroacoustics, etc. along with their technological progress that have future implications are glanced at in it. This textbook is an essential guide for both academicians and those who wish to pursue this discipline further.