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ANSI/ASA S12.8-1998 (R2020)
Methods for Determination of Insertion Loss of Outdoor Noise Barriers
Presents methods for determining the insertion loss of outdoor noise barriers. The methods are “direct” BEFORE and AFTER measurements, “indirect” BEFORE measurements at an “equivalent” site, and “indirect” predictions of BEFORE sound levels. Measurements of acoustical descriptors use sound sources naturally present at a site, controlled natural sound sources, or controlled artificial sound sources. This standard was first listed for public review in the November 10, 1995 issue of Standards Action. It is being resubmitted due to substantive changes to the text.
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Acoustical Society of America [asa]
