Preface:

This book is intended primarily as a reference for graduate students and workers in the field of acoustics. I have attempted to cover the subject of acoustic measurements in such a way that the book will be an aid to five main groups of research workers.: the acoustic physicist making fundamental laboratory measurements, the communications engineer measuring and evaluating the performance of audio communication systems, the psychologist performing measurements involving the human hearing mechanism, the otologist studying hearing defects, and finally, the industrialist applying acoustic measuring techniques in manufacturing processes.