Abstract

Common modeling methods used in the United States yield relatively similar results given sound power level from IEC 61400-11 and propagation consistent with ISO 9613-2 are typically utilized. Nonetheless, standardization of predictions is anticipated to result in a robust and repeatable process that increases regulatory confidence and understanding. American Clean Power (ACP) is recognized by the American National Standards Institute (ANSI) as an Accredited Standards Developer. A wind turbine sound modeling standard working group was established and reached consensus on a preferred method of predicting project sound levels during the siting and permitting process. The goal of this standard is to establish uniform method of predicting future projects sound levels such that pre-development sound assessment results or predictions used in research can be readily compared.

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