The past 22 years has seen the development of a number of damage risk countours for occupational noise exposure. Historical reliance has been made on the dBx subscript method for establishing specifications. This paper reviews the state-of-the-art for damage risk countours and finds serious inadequacies in such a practiced methodology. Since some 57 million wage earners are now covered by the Occupational Safety and Health Act (OSHA), the need for a redefined damage risk contour is documented, particularly the need to verify complex pure tones as the basic industrial noise exposure for a number of contemporary industries.

Author: Szecsödy, Alex J.
Affiliation: Arizona State University, Tempe, AZ
AES Convention: 45 (May 1973) Paper Number: 905
Publication Date: May 1, 1973

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