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ASTM E 1779 REV A Document Information:
Title
Standard Guide for Preparing a Measurement Plan for Conducting Outdoor Sound Measurements
ASTM International
Publication Date:
Apr 10, 1996
Scope:
This guide covers the preparation of a formal plan for measurement of
outdoor sound levels. A
documented, detailed plan is highly desirable and useful for major
environmental noise studies
requiring measurements at several locations over a long period. This
guide is intended primarily
for use in such cases. Many simple measurements can be made without
extensive prior planning or
documentation. It is recommended that persons or organizations
routinely performing such
measurements draft and use a brief generic plan based on, but not
referencing, this guide.
NOTE 1 - The extent of planning and plan documentation should be
consistent with the budget and
needs of the project. In a large measurement program it is possible
that use of a formal
measurement plan could result in cost savings greater than the cost of
preparing the plan. A formal
documented plan can be prepared for even the simplest measurement.
However, on a small project, the
cost of preparation of a formal plan may not be cost effective. In
such cases, plan documentation
could be limited to inclusion in the final report.
This guide addresses the following aspects of outdoor sound level
measurements:
Test Method E 1503 for Conducting Outdoor Sound Measurements Using a
Digital Statistical Analysis
System addresses listed aspects of outdoor sound level measurements
for situations that are
normally encountered. Many other formal and informal practices also
address most of these issues.
However, there is sometimes a need to depart from the normal methods
in order to accommodate a
special situation or a regulatory requirement. This guide provides
options that are technically
correct for specific situations, and provides the information needed
for selecting appropriate
options.
This guide may be used when planning a program for obtaining either a
single measurement set of
sound level data or multiple sets of data, as well as related
supporting data.
Measurements that may be planned using this guide include, but are not
limited, to the following:
Characterization of the acoustical environment of a site.
Characterization of the sound emissions of a specific sound source
that exhibits a temporal
variation in sound output.
Measurement of low-frequency sound (infra-sound) is included because
it is sometimes implicated in
driving structural vibration that translates to audible interior
sound.
Measurement of impulsive sound and sound with significant tonal
content.
The values stated in SI units are to be regarded as the standard. The
values given in parentheses
are for information only.
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 and
health practices and determine the applicability of regulatory
limitations prior to use.
Keywords:
- acoustical environment
- attended/unattended measurement
- calibration microphone
- duration measurement
- impulsive sound level data
- low-frequency sound level data
- measurement precautions
- measurement schedule
- measurement procedures
- measurement location
- meteorological interference
- microphone placement
- microphone protection
- operator qualifications
- outdoor sound level data
- outdoor measurement
- percentile level sound level data
- post-measurement analysis
- receptor location
- sound level measurement
- source location
- statistical analysis
- time-average level sound level data
- tonal sound level data
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