1、November 2014 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 17.140.30; 49.020!%0“2270213www.din.deDDIN ISO 5129Acoustics Measurement of sound pressure levels in the interior of aircraft duringflight (ISO 5129:2001 + Amd.1:2013),English translation of DIN ISO 5129:2014-11Akustik Messung des Schalldruckpegels in Luftfahrzeugen whrend des Fluges (ISO 5129:200
3、1 +Amd.1:2013),Englische bersetzung von DIN ISO 5129:2014-11Acoustique Mesurage des niveaux de pression acoustique lintrieur des aronefs en vol(ISO 5129:2001 + Amd.1:2013),Traduction anglaise de DIN ISO 5129:2014-11SupersedesDIN ISO 5129:2003-10www.beuth.deDocument comprises pagesIn case of doubt, t
4、he German-language original shall be considered authoritative.1411.14 DIN ISO 5129:2014-11 2 A comma is used as the decimal marker. Contents Page National foreword .3 National Annex NA (informative) Bibliography 4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Instruments 6 4.1 Gene
5、ral 6 4.2 Microphone system .6 4.3 Sound calibrator 7 4.4 Verification of conformance .7 5 Test procedures .7 5.1 Measurement procedures .7 5.1.1 Measurement locations .7 5.1.2 Acoustical sensitivity and background electrical noise 8 5.1.3 Acoustical data acquisition 8 5.2 Test conditions 8 5.2.1 Co
6、nfiguration of the aircraft interior 8 5.2.2 Configuration of aircraft systems 9 5.2.3 Crew sleeping quarters .9 5.3 Aircraft flight conditions .9 5.3.1 General 9 5.3.2 Flight condition data .9 6 Data processing .9 6.1 Averaging time .9 6.2 Sound spectra 10 6.3 Adjustment for frequency response 10 6
7、.4 Background noise correction .10 6.5 Wideband sound pressure levels and frequency-weighted sound pressure levels .10 6.6 Transient sounds .10 6.7 Measurement uncertainties 10 7 Data to be reported 11 7.1 Test report 11 7.2 Reported sound pressure levels 11 Annex A (informative) Measurement uncerta
8、inty 12 A.1 General 12 A.2 Application .12 Bibliography 14 DIN ISO 5129:2014-11 National foreword The text of ISO 5129:2001 and ISO 5129/Amd.1:2013 has been prepared by Technical Committee ISO/TC 43“Acoustics”, Subcommittee SC 1 “Noise” (Secretariat: DS, Denmark). The responsible German body involve
9、d in its preparation was the Normenausschuss Akustik, Lrmmin-derung und Schwingungstechnik im DIN und VDI (Acoustics, Noise Control and Vibration EngineeringStandards Committee in DIN and VDI), Working Committee NA 001-01-02 AA Geruschimmission Grundlagen, Ermittlung, Beurteilung and Working Group N
10、A 001-01-02-01 UA Fluggerusche. This standard includes Amendment 1 to ISO 5129:2001 published by ISO on 15 May 2013. It includes editorial and technical changes to ISO 5129:2001, see the Amendments clause. The changes made to the 2001 edition are marked by a vertical line in the left margin. The dra
11、ft of this standard was published as E DIN ISO 5129/A1:2014-03. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1683 DIN EN ISO 1683 ISO 9921 DIN EN ISO 9921 ISO 80000-8 DIN EN ISO 80000-8 ISO/IEC Guide 98-3 DIN V ENV 13005 ISO/IEC Guid
12、e 99 International vocabulary of metrology (VIM) IEC 60942 DIN EN 60942 IEC 61183 DIN EN 61183 IEC 61260-1 DIN EN 61260-1 IEC 61400-11 DIN EN 61400-11 IEC 61672-1 DIN EN 61672-1 Amendments This standard differs from DIN ISO 5129:2003-10 as follows: a) ISO 5129:2001/Amendment 1:2013 see b) to e) has
13、been incorporated in the text of DIN ISO 5129:2003-10 and the changes are marked by a vertical line in the left margin; b) normative references have been updated; c) requirements in Clause 4 “Instruments” have been strengthened; d) the terminology in Annex A “Measurement uncertainty” has been update
14、d; e) the standard has been brought in line with the current rules of presentation. Previous editions DIN ISO 5129: 1984-11, 2003-10 3 DIN ISO 5129:2014-11 National Annex NA (informative) Bibliography DIN EN 60942, Electroacoustics Sound calibrators DIN EN 61183, Electroacoustics Random-incidence an
15、d diffuse-field calibration of sound level meters DIN EN 61260-1, Electroacoustics Octave-band and fractional-octave-band filters Part 1: Specifications DIN EN 61400-11, Wind turbines Part 11: Acoustic noise measurement techniques DIN EN 61672-1, Electroacoustics Sound level meters Part 1: Specifica
16、tions DIN V ENV 13005, Guide to the expression of uncertainty in measurement DIN EN ISO 1683, Acoustics Preferred reference values for acoustical and vibratory levels DIN EN ISO 9921, Ergonomics Assessment of speech communication DIN EN ISO 80000-8, Quantities and units Part 8: Acoustics Internation
17、al vocabulary of metrology Basic and general concepts and associated terms (VIM) Bilingual German-English version ISO/IEC Guide 99 4 Acoustics Measurement of sound pressure levels in the interiorof aircraft during flight1 Scope1.1 This International Standard specifies requirements for instruments an
18、d test procedures for the measurementand reporting of sound pressure levels at crew and passenger locations in the interior of aircraft under steady flightconditions. The sound pressure levels may be used to determine various quantities for describing the acousticalenvironment in the interior of the
19、 aircraft. The procedures are intended to ensure uniformity in test results and toprovide the basis for determination of measurement uncertainties.1.2 This International Standard provides electroacoustical performance specifications for a complete measurementsystem from a microphone to the readout d
20、evice. Various individual components of a measurement system may beselected so long as the total measurement system conforms to the specifications of this International Standard.1.3 The preferred measurement procedure involves the recording of sound pressure signals with subsequentanalysis into one-
21、third-octave-band sound pressure levels. Direct measurements may be made of one-third-octave-band sound pressure levels.2 Normative references3 Terms and definitionsFor the purposes of this International Standard, in addition to the terms and definitions given in ISO 80000-8, the following definitio
22、ns apply. Definitions of other relevant quantities are given in IEC 61672-1. 1)To be published. (Revision of IEC 61260.) The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited a
23、pplies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 80000-8, Quantities and units Part 8: Acoustics IEC 60942, Electroacoustics Sound calibrators IEC 61183, Random-incidence and diffuse-field calibration of sound level meters IEC 6126
24、0-1, Electroacoustics Octave-band and fractional-octave-band filters Part 1: Specifications1)IEC 61672-1, Electroacoustics Sound level meters Part 1: Specifications DIN ISO 5129:2014-11 5 3.1aircraftany machine that can derive support in the atmosphere from reactions of the air other than the reacti
25、ons of the airagainst the earths surface3.2beatsperiodic variations in amplitude that result from the superposition of two simple harmonic quantities of differentfrequencies andNOTE Beats involve the periodic increase and decrease of amplitude at the beat frequency .3.3crew stationlocation intended
26、to be occupied or used only by aircraft crew during flight operations3.4crew sleeping quartersenclosed compartment for crew rest or sleepNOTE Crew sleeping quarters are also known as crew rest quarters, crew rest modules, or crew rest areas.3.5passenger compartmentany area intended to be occupied by
27、 passengers during flight3.6synchrophaserdevice to control the rotational speed and phase of propellers on multi-engine aircraft3.7steady flightconditions under which aircraft parameters that significantly affect interior sound pressure levels are controlled so asto yield reproducible results4 Instr
28、uments4.1 General4.2 Microphone systemThe microphone system shall conform to the applicable specifications of IEC 61672-1 for random-incidence sounds.Random-incidence response of the microphone system shall be verified by a procedure from IEC 61183.NOTE A microphone system includes those components
29、of a measurement system that produce an electrical signal in responseto a sound pressure. The components generally include one or more microphones with preamplifiers and extension cables, andother devices as necessary such as windscreens.f1f2j(f1f2)jA complete sound measurement system is composed of
30、 a microphone system, data recording and data analysis devices, a sound pressure level display device, and a sound calibrator to establish the overall acoustical sensitivity of the system. A measurement system may include multi-channel instruments and shall conform to the applicable class 1 performa
31、nce specifications of IEC 61672-1. A measurement system, including a microphone system according to 4.2, that utilizes an integrating-averaging sound level meter or a conventional sound level meter with exponential time weighting shall conform to the applicable class 1 specifications of IEC 61672-1.
32、 One-third-octave-band time-averaged sound pressure levels shall be determined with spectrum analysers that conform to the applicable class 1 specifications of IEC 61260-1. DIN ISO 5129:2014-11 6 4.3 Sound calibratorThe sound calibrator shall conform at least to the class 1C requirements of IEC 6094
33、2. The nominal frequency of thesinusoidal sound signal produced by the sound calibrator shall be in the range from to .4.4 Verification of conformance5 Test procedures5.1 Measurement procedures5.1.1 Measurement locations5.1.1.1 Passenger compartmentsSound pressure signals shall be measured at the ty
34、pical head position of a seated passenger or flight attendant, withthe passenger or attendant not present. The microphone shall be located on the seat centreline, with the axis verticaland pointed upwards, a distance of from the headrest and above the unoccupiedseat cushion. The number and distribut
35、ion of measurement locations in a passenger compartment will depend on theaircrafts seating arrangements and the specific test objectives. Measurement locations shall be chosen so as toprovide a representative description of the acoustical environment in the passenger compartment.5.1.1.2 Crew statio
36、nsSound pressure signals shall be measured at typical head positions of the crew. At flight crew locations, themicrophone shall be placed at a representative seated head height and within of the typical ear position wherespeech communication is normally received, with the flight crewmember present a
37、nd seated. Measurements at acabin-crew-standing location shall be made with the microphone above the floor, and with thecrewmember not present. Measurements at cabin-crew-seated locations not in the passenger compartment shall bemade in accordance with the specifications in 5.1.1.1. Retractable seat
38、s shall be in the occupied configuration.5.1.1.3 Crew sleeping quartersSound pressure signals shall be measured at the resting position of the crewmembers head, with the crewmembernot present. The microphone shall be placed a distance of above the mattress, blanket orheadrest, as appropriate. If the
39、 head position is close to a wall, the microphone shall be not less than fromthat wall.5.1.1.4 Microphone mountingThe microphone shall be held in a fixed location with a bracket or extension rod as appropriate to minimizeinterference and shielding effects, including those that are caused by an opera
40、tor holding the microphone extensionrod or support device. A windscreen shall be fitted around the microphone if airflow impinges on the microphoneduring a test. The insertion loss of the windscreen as a function of frequency and angle of sound incidence, in theabsence of wind, shall be known from m
41、anufacturers data or other experimental evidence.200 Hz 1 250 Hz0,15 m 0,025 m 0,65 m 0,05 m0,1 m1,65 m 0,1 m0,15 m 0,025 m0,15 mThe performance of the instruments in a measurement system should be verified to conform to the applicable requirements of IEC 61672-1, IEC 60942 and IEC 61260-1 within a
42、year before conducting a test in accordance with this International Standard. DIN ISO 5129:2014-11 7 5.1.2 Acoustical sensitivity and background electrical noise5.1.2.1 Acoustical sensitivity5.1.2.2 Background electrical noiseThe background electrical noise of the measurement system shall be determi
43、ned in one-third-octave bands with themicrophone(s) placed in a low-level sound field. Background electrical noise shall be determined for level rangesused for data acquisition. When recorded, the duration of the recording time shall be at least .5.1.3 Acoustical data acquisition5.1.3.1 Data recordi
44、ngsFor each measurement, the duration of the recording shall be at least . The level-range-control settings of therecording system shall be monitored to ensure that signals are recorded near the optimum record level, avoidingoverload of input stages. If beats are noted to be present, the recording t
45、ime at a measurement location shall includeat least four beat periods, with a minimum recording time of .5.1.3.2 Direct measurementsAn integrating-averaging sound level meter with a set of one-third-octave-band filters, or a spectrum analyser, ispreferred for direct measurement of one-third-octave-b
46、and sound pressure levels. Averaging times shall be asspecifiedin6.1.NOTE Time weighting S should be used if sound pressure levels are measured by a conventional sound level meter.5.1.3.3 Crew sleeping quartersSound pressure signals shall be recorded for at least at locations noted in 5.1.1.3 and wi
47、th minimal cabin andcockpit transient sounds (that is, no audible conversations, radio transmission, or transient operation of equipment).If measurement of transient sounds is required, sound pressure signals shall be recorded while the source of thetransient sound is activated, for example, by flus
48、hing the toilet in a lavatory, opening and closing the door to a cockpitor lavatory, or operations in a galley. Five separate recordings of the sound pressure signal shall be made for eachtransient sound source.5.2 Test conditions5.2.1 Configuration of the aircraft interiorThe interior of the aircra
49、ft shall be fully furnished with carpets, seats and curtains, and the configuration shall benoted. Factors that influence interior sound pressure levels, such as the location of partitions in the passengercompartments and the material used to cover the seats, shall be included in the description of the aircraftconfiguration. Seat backrests shall be set to their most upright position. The number of persons in the test aircraftshall be kept to the
