In 1968, the American Speech and Hearing Association organized a Conference on Noise as a Public Health Hazard, at which a group of speakers presented summaries of the current state of knowledge on all aspects of the noise problem. In May 1973, a second conference was held in Dubrovnik, Yugoslavia. It was sponsored by the Union of Medical Societies of Yugoslavia, the World Health Organization, the U.S. Environmental Protection Agency, and the American Speech and Hearing Association. This document contains most of the invited papers that were presented. The length of these papers made it impractical to publish any of the short contributed papers that were presented, many of which were excellent, or the often lively discussions that followed each session.