AGR-IMPACTS-Environment ; AGR-OTHER TOPICS-Tourism ; AGR-PUBLIC AND TRIBAL LANDS-PUBLIC AND TRIBAL LANDS ; AGR-IMPACTS-Tourism ; NTL-AVIATION-Aviation Energy and Environment ;

This document describes an “ambient noise measurement protocol”, a detailed methodology for characterizing ambient noise in low-level environments such as the National Parks. It presents definitions of terminology useful for understanding the measurement and assessment guidelines. Also included are a general overview, an historical perspective, and a statement of purpose and objective. Specific details of characterizing a study area’s ambient noise are outlined, including measurement site selection, instrumentation, and general field measurement procedures. Particular attention is given to the data reduction and analysis methodology, including guidance on assigning actual measured ambient noise to all specific locations within a study area. Proposed field testing of the methodology and subsequent refinement are also discussed. Additionally, specifics on a low-level noise measurement system developed by the Volpe Center Acoustics Facility are included.

Volpe