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ASTM E1573-18

(Test Method)

Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure Levels

Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure Levels

SIGNIFICANCE AND USE
5.1 Acoustical performance is dependent on many factors (see Guide E1374 for a discussion on general office acoustical considerations). One of these factors is the masking sound. The masking spectrum shape and level must conform within specified tolerances throughout the treated area. The measurement and recording of these parameters are addressed in this test method.  
5.2 The results from this test method are used to determine if the masking sound meets a particular specification.
SCOPE
1.1 This test method specifies the procedure used to measure the masking sound in terms of A-weighted and one-third-octave-band sound pressure levels.  
1.2 The results of this test method can be used to determine if and where the masking sound meets (or does not meet) a particular specification.  
1.3 This test method does not evaluate the overall acoustical environment. It is intended only to measure and report the masking sound levels.  
1.4 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.  
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.

General Information

Status
Historical
Publication Date
31-Dec-2017
ICS
91.120.20 - Acoustics in building. Sound insulation
Technical Committee
E33 - Building and Environmental Acoustics
Drafting Committee
E33.02 - Speech Privacy
Current Stage
Ref Project

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ASTM E1573-18 - Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure LevelsASTM E1573-18 - Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure Levels
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REDLINE ASTM E1573-18 - Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure LevelsREDLINE ASTM E1573-18 - Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure Levels
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E1573 − 18
Standard Test Method for
Measurement and Reporting of Masking Sound Levels
Using A-Weighted and One-Third-Octave-Band Sound
1
Pressure Levels
This standard is issued under the fixed designation E1573; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
This test method is one of a set of standards relating to the acoustical performance of components
orsystemsinopenandclosedofficesettings.Theotherstandardsinthissetdealwiththemeasurement
of the sound attenuation between work stations provided by partial height space dividers, vertical
surfaces, acoustical ceiling systems; and speech privacy in open and closed spaces.
1. Scope 2. Referenced Documents
2
1.1 This test method specifies the procedure used to mea- 2.1 ASTM Standards:
sure the masking sound in terms ofA-weighted and one-third- C634 Terminology Relating to Building and Environmental
octave-band sound pressure levels. Acoustics
E1374 Guide for Open Office Acoustics and Applicable
1.2 The results of this test method can be used to determine
ASTM Standards
if and where the masking sound meets (or does not meet) a
3
particular specification. 2.2 IEC Standards:
IEC 61260:1 Electroacoustics - Octave-band and fractional-
1.3 This test method does not evaluate the overall acoustical
octave-band filters - Part 1: Specifications
environment. It is intended only to measure and report the
IEC 61672:1 Electroacoustics - Sound Level meters - Part 1:
masking sound levels.
Specifications
1.4 The values stated in SI units are to be regarded as
NOTE 1—The IEC standards are often adopted by national standards
standard. The values in parentheses are for information only.
organizations as national standards sometimes with additional unique
1.5 This standard does not purport to address all of the
national standards numbers assigned.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 3. Terminology
priate safety, health, and environmental practices and deter-
3.1 Definitions:
mine the applicability of regulatory limitations prior to use.
3.1.1 The acoustical terminology used in this test method is
1.6 This international standard was developed in accor-
consistent with the definitions in Terminology C634.
dance with internationally recognized principles on standard-
3.2 Definitions of Terms Specific to This Standard:
ization established in the Decision on Principles for the
3.2.1 masking sound—sound that reduces the intelligibility
Development of International Standards, Guides and Recom-
of speech and the distraction of activity noise.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
ThistestmethodisunderthejurisdictionofASTMCommitteeE33onBuilding contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
and Environmental Acoustics and is the direct responsibility of Subcommittee Standards volume information, refer to the standard’s Document Summary page on
E33.02 on Speech Privacy. the ASTM website.
3
Current edition approved Jan. 1, 2018. Published February 2018. Originally Available from International Electrotechnical Commission (IEC), 3, rue de
approved in 1993. Last previous edition approved in 2009 as E1573 – 09. DOI: Varembé, 1st Floor, P.O. Box 131, CH-1211, Geneva 20, Switzerland, http://
10.1520/E1573-18. www.iec.ch.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1573 − 18
3.2.1.1 Discussion—Masking sound is produced and con- system and other sound sources shall be operated at their
trolled most effectively by an electronic sound masking sys- normal daytime conditions.
tem.
7.5 Sound masking features such as adaptive level adjust-
3.2.2 sound masking system—electronic equipment and
ment or programmable timer shall be deactivated and set to the
loudspeakers used to generate, distribute, and control masking
specified base levels during measurements.
sound throughout a treated area.
NOTE 2—Testing the HVAC system alone will typically occur in order
to verify the need for electronic sound masking and conversely, to
4. Summary of Test Method
determine the areas within a facility where the HVAC levels may already
exceed ideal masking sound levels.
4.1 The conformity of the masking sound to a specified
NOTE 3—When the masking system is measured without the HVAC as
curve and level is determined by measuri
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E1573 − 09 E1573 − 18
Standard Test Method for
Evaluating Measurement and Reporting of Masking Sound
in Open Offices Levels Using A-Weighted and One-Third
Octave Band One-Third-Octave-Band Sound Pressure
1
Levels
This standard is issued under the fixed designation E1573; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
This test method is one of a set of standards for evaluatingrelating to the acoustical performance of
components or systems in an open office. open and closed office settings. The other standards in this
set deal with the measurement of the sound attenuation between work stations provided by partial
height space dividers, vertical surfaces, and acoustical ceiling systems; speech privacy; and the
evaluation of masking sound.and speech privacy in open and closed spaces.
1. Scope
1.1 This test method specifies the procedures that can be procedure used to evaluate the spatial and temporal uniformity of
measure the masking sound in open offices using A-weighted sound levels. It also specifies the procedure for evaluating the
masking sound spectrum and level using one-third octave band terms of A-weighted and one-third-octave-band sound pressure
levels.
1.2 The results of this test method can be used to determine if the masking sound meets a particular specification for spatial and
temporal uniformity if that specification is written in terms of A-weighted sound levels and if and where the masking sound meets
a particular spectrum shape and level in the office area.(or does not meet) a particular specification.
1.3 This test method must not be used to does not evaluate the acoustical environment in an office space. overall acoustical
environment. It is intended only to evaluate measure and report the masking sound in an office. This test method, for instance, does
not evaluate the low frequency levels.rumble noise found in some offices.
1.4 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.
1.5 This standard does not purport to address all of the safety problems,concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appropriate safety safety, health, and healthenvironmental 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C634 Terminology Relating to Building and Environmental Acoustics
E1374 Guide for Open Office Acoustics and Applicable ASTM Standards
1
This test method is under the jurisdiction of ASTM Committee E33 on Building and Environmental Acoustics and is the direct responsibility of Subcommittee E33.02
on Speech Privacy.
Current edition approved April 1, 2009Jan. 1, 2018. Published April 2009February 2018. Originally approved in 1993. Last previous edition approved in 20022009 as
E1573E1573 – 09.–02. DOI: 10.1520/E1573-09.10.1520/E1573-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1573 − 18
3
2.2 ANSIIEC Standards:
S1.11 –2004 Specification for Octave-Band and Fractional-Octave Band Analog and Digital Filters
S1.43IEC 61260:1 –1997 (R 2007) Specifications for integrating averaging sound level meters Electroacoustics - Octave-band
and fractional-octave-band filters - Part 1: Specifications
IEC 6167261672:1 –2002 Electroacoustics-Electroacoustics - Sound Level meters-part 1: specificationsmeters - Part 1:
Specifications
NOTE 1—The IEC standards are often adopted by national standards organizations as national standards sometimes with additional unique national
standards numbers assigned.
3. Terminology
3.1 Defi
...

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1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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.  
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ASTM C522-03(2022)(Test Method)
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SIGNIFICANCE AND USE
5.1 The specific airflow resistance of an acoustical material is one of the properties that determine its sound-absorptive and sound-transmitting properties. Measurement of specific airflow resistance is useful during product development, for quality control during manufacture, and for specification purposes.  
5.2 Valid measurements are made only in the region of laminar airflow where, aside from random measurement errors, the airflow resistance (R = P/U) is constant. When the airflow is turbulent, the apparent airflow resistance increases with an increase of volume velocity and the term “airflow resistance” does not apply.  
5.3 The specific airflow resistance measured by this test method may differ from the specific resistance measured by the impedance tube method in Test Method E384 for two reasons. In the presence of sound, the particle velocity inside a porous material is alternating while in this test method, the velocity is constant and in one direction only. Also, the particle velocity inside a porous material is not the same as the linear velocity measured outside the specimen.
SCOPE
1.1 This test method covers the measurement of airflow resistance and the related measurements of specific airflow resistance and airflow resistivity of porous materials that can be used for the absorption and attenuation of sound. Materials cover a range from thick boards or blankets to thin mats, fabrics, papers, and screens. When the material is anisotropic, provision is made for measurements along different axes of the specimen.  
1.2 This test method is designed for the measurement of values of specific airflow resistance ranging from 100 to 10 000 mks rayls (Pa·s/m) with linear airflow velocities ranging from 0.5 mm/s to 50 mm/s and pressure differences across the specimen ranging from 0.1 Pa to 250 Pa. The upper limit of this range of linear airflow velocities is a point at which the airflow through most porous materials is in partial or complete transition from laminar to turbulent flow.  
1.3 A procedure for accrediting a laboratory for the purposes of this test method is given in Annex A1.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4.1 Table 1 is provided for user to convert into cgs units.    
cgs acoustic ohm  
mks acoustic ohm (Pa·s/m3)  
105  
cgs rayl  
mks rayl (Pa·s/m)  
10    
cgs rayl/cm  
mks rayl/m (Pa·s/m2)  
103  
cgs rayl/in.  
mks rayl/m (Pa·s/m2)  
394  
mks rayl/in.  
mks rayl/m (Pa·s/m2)  
39.4  
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.

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ASTM
ASTM E1042-22(Classification)
Standard Classification for Acoustically Absorptive Materials Applied by Trowel or Spray

SIGNIFICANCE AND USE
4.1 Acoustically absorptive materials are used for the control of reverberation and echoes in rooms. This standard provides a classification method for acoustically absorptive materials applied directly to surfaces by trowel or by spray.
SCOPE
1.1 This classification covers materials applied by trowel or spray to surfaces for the purpose of increasing their acoustical absorption.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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.

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ASTM
ASTM E1573-22(Test Method)
Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure Levels

SIGNIFICANCE AND USE
5.1 Acoustical performance is dependent on many factors (see Guide E1374 for a discussion on general office acoustical considerations). One of these factors is the masking sound. The masking spectrum shape and level must conform within specified tolerances throughout the treated area. The measurement and recording of these parameters are addressed in this test method.  
5.2 The results from this test method are used to determine if the masking sound meets a particular specification.
SCOPE
1.1 This test method specifies the procedure used to measure the masking sound in terms of A-weighted and one-third-octave-band sound pressure levels.  
1.2 The results of this test method can be used to determine if and where the masking sound meets (or does not meet) a particular specification.  
1.3 This test method does not evaluate the overall acoustical environment. It is intended only to measure and report the masking sound levels.  
1.4 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.  
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.

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