ASTM E1014-12R21 - Standard Guide for Measurement of Outdoor A-Weighted Sound Levels

1.1 This guide covers the measurement of A-weighted sound levels outdoors at specified locations or along particular site boundaries, using a general purpose sound-level meter.

1.2 Three distinct types of measurement surveys are described:

1.3 The data obtained using this guide are presented in the form of either time-average sound levels (abbreviation TAV and symbol L_AT, also known as equivalent sound level or equivalent continuous sound level abbreviated LEQ and with symbol L_AeqT ) or A-weighted percentile levels (symbol L_X).

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.