`Engineering Acoustics' is a teaching textbook that can serve as a tool for self-study and as a compendium for lectures as well. It is one of the author's most important goals not only to describe how the topic develops but also why a specific way is chosen. The explanations do not restrict themselves to mathematical formulas. Only the illustrative explanation relying on the reader's imagination creates comprehension. This book presents the foundations of that what nowadays seems necessary to make our environment quieter - in buildings as well as in the open air. Fundamental chapters on the physics and perception of sound precede those on noise reduction methods. The last chapter deals with microphones and loudspeakers. Specific measurement procedures are discussed throughout the book. Not more than the usual mathematical skills such as calculus are required . The appendix gives a short introduction on the use of complex amplitudes in acoustics.