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Library Card

Shilling, Eric . 1998. SPreAD Noise Prediction Program. 9823 1308. San Dimas, CA: U.S. Department of Agriculture, Forest Service, San Dimas Technology and Development Center. 7 p.

SPreAD is a System for the Prediction of Acoustic Detectability, based on a software model originally developed for the U.S. Army in the early 1970s. It was adapted in 1980 to a workbook format intended to help land managers predict the impacts of noise on outdoor recreationists. The workbook version of SPreAD is a step-by-step method that uses lookup tables of typical noise source levels, background sound levels, terrain characteristics, and weather conditions to predict the audibility of man-made sounds in the forest environment. This document explains how to use the computerized version of SPreAD, a software system developed for use on a Sun Workstation. The software was compiled at the San Dimas Technology & Development Center (SDTDC) on the IBM system and a PC with a LINUX operating system.

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