1、Designation: E2964 141Standard Test Method forMeasurement of the Normalized Insertion Loss of Doors1This standard is issued under the fixed designation E2964; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisio
2、n. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTEEditorially corrected 6.3 in February 2017.INTRODUCTIONThis test method is part of a set of standards for evaluating the sound-insulating
3、 properties ofbuilding elements and the sound isolation between spaces. It is designed to measure the field soundisolation performance of doors. Others in the set cover the airborne sound transmission loss of anisolated partition element in a controlled laboratory environment (Test Method E90), fiel
4、d measure-ments of the sound isolation between rooms in buildings (Test Method E336), the laboratorymeasurement of impact sound transmission through floors (Test Method E492), the measurement ofimpact sound transmission in buildings (Test Method E1007), the measurement of sound transmissionthrough b
5、uilding facades and facade elements (Guide E966), and the measurement of soundtransmission through a common plenum between two rooms (Test Method E1414).1. Scope1.1 The sound insulation properties of a door are measuredin a laboratory as the sound transmission loss in accordancewith Test Method E90.
6、 Using those data single number ratingsound transmission class (STC) is assigned. In the field, therooms on one or both sides of a partition containing a door areoften either too small or too large and absorptive to allow theapparent transmission loss (ATL) of the partition-door assem-bly to be meas
7、ured. Even if that is not the case, the resultmeasured is the composite ATL of the partition including thedoor, and not that of the door itself. Test Method E336 actuallystates that it is impossible to measure the ATL of a portion ofa partition such as a door according to the procedures of thatstand
8、ard. This test method provides a method of evaluatingdoors in such cases using a normalized insertion loss with aresulting single number rating door transmission class, DTC.This method is intended primarily for hinged personnel doorswith latching mechanisms and is limited to door openings ofarea les
9、s than 6 m2. The flanking effects of surroundingstructure are reduced compared to E336 but not completelyeliminated. In a laboratory environment, the DTC is close to orequal to the STC of the door, but in the field results less thanthe laboratory STC should be expected.1.2 The values stated in SI un
10、its are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3 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 pra
11、ctices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C634 Terminology Relating to Building and EnvironmentalAcousticsE90 Test Method for Laboratory Measurement of AirborneSound Transmission Loss of Building Partitions andElementsE3
12、36 Test Method for Measurement of Airborne SoundAttenuation between Rooms in BuildingsE413 Classification for Rating Sound InsulationE492 Test Method for Laboratory Measurement of ImpactSound Transmission Through Floor-Ceiling AssembliesUsing the Tapping MachineE966 Guide for Field Measurements of A
13、irborne SoundAttenuation of Building Facades and Facade ElementsE1007 Test Method for Field Measurement of Tapping1This test method is under the jurisdiction ofASTM Committee E33 on Buildingand Environmental Acoustics and is the direct responsibility of SubcommitteeE33.03 on Sound Transmission.Curre
14、nt edition approved June 1, 2014. Published July 2014. DOI: 10.1520/E2964-14E01.2For 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
15、onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theD
16、evelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1Machine Impact Sound Transmission Through Floor-Ceiling Assemblies and Associated Support StructuresE1414 Test Method for Airborne Sound Attenuation B
17、e-tween Rooms Sharing a Common Ceiling Plenum2.2 ANSI Standards:3S1.4 Specification for Sound Level MetersS1.10 Pressure Calibration of Laboratory Standard PressureMicrophonesS1.11 Specification for Octave-Band and Fractional-Octave-Band Analog and Digital FiltersS1.40 Specification and Verification
18、 Procedures for SoundCalibrators2.3 IEC Standards:4IEC 60804 Specification for Integrating-Averaging SoundLevel MetersIEC 60942 ElectroacousticsSound Calibrators2.4 ISO Standard:5ISO 16283-1:2014 Acoustics - Field measurement of soundinsulation in buildings and of building elements - Part 1:Airborne
19、 sound insulation3. Terminology3.1 The following terms used in this test method havespecific meanings that are defined in Terminology C634:3.1.1 airborne sound; background noise; decay rate; decibel;diffuse sound field; field sound transmission class, FSTC; fieldtransmission loss, FTL; flanking tran
20、smission; pink noise;receiving room; self-noise; sound absorption; sound attenua-tion; sound insulation; sound isolation; sound pressure level;sound transmission loss, TL; source roomNOTE 1The unqualified term average sound pressure level in thisdocument means that sound pressure levels were average
21、d for specifiedperiods of time.3.2 Definitions of Terms Specific to This Standard:3.2.1 apparent transmission loss, ATL, nof a partitioninstalled in a building, in a specified frequency band isoperationally defined as:ATL 5 L12 L2110 logSSA2D(1)where:S = the area of the partition common to both sour
22、ce andreceiving rooms,A2= the sound absorption in the receiving room,L1= the source room average sound pressure level, andL2= the receiving room average sound pressure level result-ing from the combined effect of direct and flankingtransmission.3.2.1.1 DiscussionThroughout this test method, log ista
23、ken to mean log10, unless otherwise indicated.3.2.1.2 DiscussionThis definition attributes all the powertransmitted into the receiving room, by direct and flankingpaths, to the area of the partition common to both rooms. Ifflanking transmission is significant, the ATL will be less thanthe TL for the
24、 partition. Apparent transmission loss (ATL) isequivalent in meaning to apparent sound reduction index(ASRI) used by ISO 16283-1:2014.3.2.2 direct transmission, nsound that travels between asource and a receiving room only through the common(separating) building element.3.2.3 door transmission class
25、, DTC, na single numberrating obtained by applying the classification procedure ofClassification E413 to normalized door insertion loss data.3.2.4 normalized door insertion loss, NDIL, nof a doorinstalled in a building in a specified frequency band isoperationally defined asNDIL 5Lrec open!2 Lrec cl
26、osed!1Lsource closed!2 Lsource open!(2)when a sound source is operated on the source side of thedoor.where:L(rec open)= the average sound pressure level on thereceiving side of the door with the dooropen,L(rec closed)= the average sound pressure level due to thesource on the receiving side of the do
27、or withthe door closed,L(source closed)= the average sound pressure level on thesource side of the door with the door closed,andL(source open)= the average sound pressure level on thesource side of the door with the door open.4. Summary of Test Method4.1 The door and corresponding source and receivi
28、ng roomsare selected.4.2 The number and location of sound sources are chosen,sound is produced in the source room and sound pressure levelsare measured on each side of the door with the door both openand closed using either a fixed microphone or scanningmethod.4.3 The background sound is measured in
29、 the receivingroom with the source(s) off and the door closed.4.4 Results and single number ratings are calculated andreported.5. Significance and Use5.1 This standard provides a method for testing the apparentsound insulating properties of doors in the field originallyproposed by Morin (1).6This al
30、lows doors to be evaluated witha result that has been found to be similar to the transmissionloss.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from International Electrotechnical Commission (IEC), 3, rue deV
31、aremb, P.O. Box 131, CH-1211 Geneva 20, Switzerland, http:/www.iec.ch.5Available from International Organization for Standardization (ISO), 1, ch. dela Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http:/www.iso.org.6The boldface numbers in parentheses refer to the list of references at the en
32、d ofthis standard.E2964 14125.2 The results of this measurement are the normalized doorinsertion loss, NDIL, at individual frequencies, and the singlenumber rating door transmission class, DTC. The insertion lossis normalized by the small change in sound level which occurson the source side when the
33、 door is opened and closed.5.3 Comparative measurements using this method and themethod of Test Method E90 on the same door installations ina laboratory indicate good agreement between the transmissionloss and normalized door insertion loss. See Appendix X1 andRef (2).5.4 The fixed-microphone and sc
34、anning methods have beencompared in the field. See Appendix X2.6. Test Equipment6.1 Sound Sources and SignalsSound sources shall beloudspeaker systems driven by power amplifiers. The inputsignal to the amplifiers shall be random noise containing anapproximately continuous distribution of frequencies
35、 over eachtest band. White or pink electronic noise sources satisfy thiscondition.NOTE 2Ideally, loudspeaker systems should be omnidirectional. Inpractice, using multiple driver elements to cover different frequencyranges and placing and aiming sources into trihedral corners of the roomwill normally
36、 be adequate.6.1.1 The sound power of the source(s) must be sufficient toraise the signal level in the receiving room with the door closedfar enough above background noise to meet the requirementsof 11.8.6.2 Measuring EquipmentMicrophones, amplifiers, andelectronic circuitry to process microphone si
37、gnals and performmeasurements shall satisfy the requirements of ANSI S1.4 forType 1 sound level meters, except that B and C weightingnetworks are not required.6.2.1 Measurement quality microphones 13 mm or smallerin diameter and that are close to omnidirectional below 5000Hz shall be used.NOTE 3If m
38、easurements are to be made above 5000 Hz, a diffuse-field(random-incidence) microphone or corrector is preferred.6.2.1.1 If multiple microphones are used, they shall all be ofthe same make and model.6.3 Bandwidth and FilteringThe measurement systemfilters or each test band, shall meet or exceed the
39、specificationsof ANSI S1.11 for one-third-octave band filter set, class 1 orbetter.6.3.1 The minimum range of measurements shall be a seriesof contiguous one-third-octave bands with mid-band frequen-cies from 125 to 4000 Hz.NOTE 4It is desirable that the frequency range be extended to includeat leas
40、t the 100 and 5000-Hz bands as this is required to calculateoctave-band results. With modern-parallel measurement instruments, noextra work is required.6.4 CalibratorsThe field calibrator used for sensitivitychecks shall be an acoustic or electroacoustic calibrator meet-ing class 1 requirements of A
41、NSI S1.40 or IEC 60942.7. Calibration and Sensitivity Checks7.1 A thorough calibration of acoustical instrumentation bya calibration laboratory at regular intervals is necessary to helpassure that the equipment is operating within instrumentstandards and manufacturers specifications. The appropriate
42、calibration interval depends on several factors including thecomplexity of the instrument, frequency of use, frequency offield use and transportation, manufacturer recommendations,and history of reliability or problems as observed in priorcalibrations.NOTE 5ANSI S1.10 provides more information on ca
43、libration.7.2 Perform sensitivity checks of the entire measuring setup(including the microphone, all cables, and instruments) withthe same calibration equipment before and after the measure-ments. If the calibration values differ by more than 0.5 dB, theresults are invalid and measurements shall be
44、repeated.8. Test Site and Door Conditions8.1 The test specimen will be a door in a partition thatseparates the source and receiving rooms.8.2 Flanking transmission in the structure adjacent to thedoor will be present.8.3 While this method is designed to minimize the influenceof flanking, major flank
45、ing due to weakness of the partition inwhich the door is installed (or other paths) may influenceresults. If such is suspected, temporary improvements to thepartition or other paths may be made. Such improvements shallbe reported. Particular attention shall be given to identifyingpotential flanking
46、paths that may be present through ducts orthrough plenums over acoustical ceilings.NOTE 6If it is desired to investigate the effect of flanking, this mightbe done by constructing a cover over the source side of the door andrepeating the measurements of the receive side level with the door closed.A s
47、uitable cover could be a layer of gypsum spaced approximately 100mm from the door with sound absorptive material in that cavity and theedges sealed.8.4 Results will be influenced by the performance of thedoor seals. Care shall be taken to assure the door is properlyclosed with any latch present prop
48、erly latched when measure-ments are made on the receiving side with the door closed.8.5 When the door is opened it shall be opened as far aspossible for each open door measurement to minimize theinfluence of reflections from its surface.9. Door and Room Selection9.1 When measurements are being made
49、to evaluate theapparent sound insulation performance of a particular door, thedoor may be specified by the party requesting the test. In othercases it may be necessary to select a door or number of doorsto be examined from among many. This method does notimpose particular requirements on the test spaces except that itis desirable that the ATL of the partition into which the door isinstalled be significantly greater than that of the door. Thus,where partitions differ, it is desirable to select doors inpartitions believed to have the highest trans
