Originally published in 1976, this introduction to hearing was intended to provide a sufficient introduction to each of several subareas of hearing so that the serious student can read the more advanced treatments with greater appreciation and understanding. It was intended for upper graduate and graduate students. It assumes some mathematical sophistication – calculus for example, but there is some review of more basic concepts, such as logarithms. There is also a brief treatment of the necessary material from the different disciplines – physics, physiology, psychology, anatomy and mathematics – that a student of hearing will need to know.