ASTM_E_1130_-_16.pdf

Designation:E113016Standard Test Method forObjective Measurement of Speech Privacy in Open PlanSpaces Using Articulation Index1This standard is issued under the fixed designation E1130;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis is one of a series of test methods for assessing speech privacy in buildings.This specificstandard is designed to assess the speech privacy between locations in open plan spaces,whereoccupants are separated only by partial-height partitions and furnishings.Another test method dealswith assessing speech privacy for closed rooms.A related test method deals with the laboratorymeasurement of interzone attenuation for open plan components intended to provide speech privacy,such as partial height space dividers,ceiling systems and wall finishes.1.Scope1.1 This test method describes a means of objectivelyassessing speech privacy between locations in open planspaces.This test method relies upon acoustical measurements,published information on speech levels,and standard methodsfor assessing speech communication.This test method does notmeasure the performance of individual open plan componentswhich affect speech privacy;but rather,it assesses the privacywhich results from a particular configuration of components(1,2).21.2 This test method is intended to be a field test for theassessment of speech privacy in actual open plan spaces.However,this test method could be used in mock-up spacesand in environments arranged to simulate an open plan space.1.3 This test method is suitable for use in many open planspaces including traditional open offices,focus areas,andcollaboration spaces.In addition to office buildings,these typesof spaces will also be found in healthcare buildings,institu-tional spaces,schools,etc.It is not directly applicable formeasuring the speech privacy between open plan and enclosedspaces or between fully enclosed spaces.1.4 This test method relies upon the Articulation Index,which objectively predicts the intelligibility of speech.Whileboth the Articulation Index and this test method can beexpected to reliably predict speech privacy,neither predicts thespecific effective speech privacy afforded to particular indi-vidual occupants.1.5 The values stated in SI units are to be regarded as thestandard.The inch-pound units in parentheses are for informa-tion only.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3C634 Terminology Relating to Building and EnvironmentalAcousticsE1179 Specification for Sound Sources Used for TestingOpen Office Components and Systems2.2 ANSI Standards:4ANSI/ASA S1.4-2014/PART 1/IEC 61672:1-2013 Specifi-cation for Sound Level MetersANSI/ASA S1.6-1984(R2011)Preferred Frequencies,Fre-quency Levels,and Band Numbers for Acoustical Mea-surementsANSI/ASA S1.11-2014/Part 1/IEC 61260:1-2014 Specifica-tion for Octave-Band,and Fractional-Octave-Band Ana-log and Digital Filters1This test method is under the jurisdiction ofASTM Committee E33 on Buildingand Environmental Acoustics and is the direct responsibility of SubcommitteeE33.02 on Speech Privacy.Current edition approved Nov.15,2016.Published December 2016.Originallyapproved in 1986.Last previous edition approved in 2008 as E1130 08.DOI:10.1520/E1130-16.2The boldface numbers in parentheses refer to the list of references at the end ofthis test method.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.Terminology3.1 Definitions:3.1.1 The acoustical terminology used in this test method isconsistent with Terminology C634.Of special importance arethe terms average sound pressure level and arithmetic meansound pressure level,both of which are defined in TerminologyC634,and source point which is defined in SpecificationE1179.4.Summary of Test Method4.1 Select two locations in an open plan environment,between which the speech privacy is to be assessed.Designateone location as the talker or source location and the other as thelistener or measurement location.These locations should typifythe usual positions of occupants within the open plan space.4.2 All masking sound systems and HVA