1、January 2008DEUTSCHE NORM English price group 12No part of this standard 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).ICS 01.060; 17.140.01!$K:P
2、“1402345www.din.deDDIN EN ISO 80000-8Quantities and units Part 8: Acoustics (ISO 80000-8:2007, corrected 2007-08-15)English version of DIN EN ISO 80000-8:2008-01Gren und Einheiten Teil 8: Akustik (ISO 80000-8:2007, berichtigt 2007-08-15)Englische Fassung DIN EN ISO 80000-8:2008-01SupersedesDIN 1332:
3、1969-10www.beuth.deDocument comprises 22 pagesDIN EN ISO 80000-8:2008-01 2 National foreword This standard has been prepared by Technical Committee ISO/TC 12 “Quantities, units, symbols, conversion factors”, Working Group WG 3. The responsible German body involved in its preparation was the Normenau
4、sschuss Akustik, Lrmminderung und Schwingungstechnik (Acoustics, Noise Control and Vibration Engineering Standards Committee), Joint Committee NA 001-01-01 GA. This document has been adopted as DIN EN ISO 80000-8 against the express wishes of the responsible German body, joint committee NA 001-01-01
5、 GA of the Normenausschuss Akustik, Lrmminderung und Schwingungstechnik (NALS) im DIN und VDI (Acoustics, Noise Control and Vibration Engineering Standards Committee in DIN and VDI) and the Normenausschuss Technische Grundlagen (NATG) im DIN (Fundamen-tal Technical Standards Committee). The Committe
6、e NA 001-01-01 GA advises users of this standard of the following: This European Standard falls under Directives 2002/49/EC and 2003/10/EC. It also falls under the scope of the 43 Ordinance for the implementation of the German Federal Immission Control Act Noise mapping (34. BlmSchv) of 2006-03-06 a
7、nd the German Occupational health and safety ordinance on noise and vibration implementing EC Directives 2002/44/EC and 2003/10/EC (LrmVibrationsArbSchV) of 2007-03-06. A definition of the sound pressure level (item 8-22) that is based on a sound pressure determined by means of an instantaneous valu
8、e (see item 8-9-2) is unsuitable in terms of occupational health and safety, and of environmental and noise protection, and presents a considerable safety hazard. The definition of the sound pressure level must thus read as follows: Item No. Name Symbol Definition Remarks 8-22 (7-21) sound pressure
9、level Lplg10202pppL =where pftis a frequency and time weighted sound pressure, and the reference value in airborne acoustics is p0= 20 Pa If specific frequency and time weightings as specified in IEC 61672-1 are applied, this should be indicated by ap-propriate subscripts to Lp. For a general defini
10、tion of the level of a field quantity, see also ISO 80000-3:2006, item 3-21. For media other than air, other reference values may be used. The statement from the original definition “Because of practical limitations of the measurement instruments, p2is always understood to denote the square of a fre
11、quency-weighted, frequency-band-limited or time-weighted sound pressure or both” has been deleted, as this contradicts the amended definition supplied by the German body. The DIN Standards corresponding to the International Standards referred to in the EN are as follows: ISO 16 DIN 1317 series ISO 8
12、0000-3 DIN 1304-1 ISO 80000-4 DIN 1304-1 IEC 60027-1 DIN 1304-1, DIN 1313 and DIN 1338 IEC 61672-1 DIN EN 61672-1 dB, rdftDIN EN ISO 80000-8:2008-01 3 Amendments This standard differs from DIN 1332:1969-10 as follows: a) The standard has a new design in alignment with the other standards in the ISO
13、80000 series. b) The content has been harmonized with the standards of the IEC 60027 series and the other standards in the ISO 80000 series. c) The content has been fully revised. Previous editions DIN 1332: 1957-10, 1969-10 National Annex NA (informative) Bibliography DIN 1304-1, Letter symbols for
14、 physical quantities Part 1: Symbols for general use DIN 1313, Quantities DIN 1317 (all parts), Standard tuning DIN 1320, Acoustics Terminology DIN 1338, Writing and typesetting of formulae DIN EN 61672-1, Electroacoustics Sound level meters Part 1: Specifications DIN EN ISO 80000-8:2008-01 4 This p
15、age is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 80000-8 June 2007 ICS 01.060 English Version Quantities and units - Part 8: Acoustics (ISO 80000-8:2007, corrected 2007-08-15) Grandeurs et units - Partie 8: Acoustique (ISO 80000-8:2007, version corrige 2007-08-15)
16、Gren und Einheiten - Teil 8: Akustik (ISO 80000-8:2007, berichtigt 2007-08-15) This European Standard was approved by CEN on 3 May 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national
17、 standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any
18、other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Esto
19、nia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROP
20、ISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 80000-8:2007: E2Foreword This document (EN ISO 80000-8:2007) has been prepared by Technical C
21、ommittee ISO/TC 12 “Quantities, units, symbols, conversion factors” in collaboration with Technical Committee CEN/TC 211 “Acoustics”, the secretariat of which is held by DS. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endo
22、rsement, at the latest by December 2007, and conflicting national standards shall be withdrawn at the latest by December 2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Be
23、lgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice T
24、he text of ISO 80000-8:2007 has been approved by CEN as EN ISO 80000-8:2007 without any modifications. EN ISO 80000-8:2007 (E)DIN EN ISO 80000-8:2008-01 Introduction0.1 Arrangements of the tablesThe tables of quantities and units in this International Standard are arranged so that the quantities are
25、presented on the left-hand pages and the units on the corresponding right-hand pages.All units between two full lines on the right-hand pages belong to the quantities between the corresponding fulllines on the left-hand pages.Where the numbering of an item has been changed in the revision of a part
26、of ISO 31, the number in thepreceding edition is shown in parentheses on the left-hand page under the new number for the quantity; a dashis used to indicate that the item in question did not appear in the preceding edition.0.2 Tables of quantitiesThe names in English and in French of the most import
27、ant quantities within the field of this InternationalStandard are given together with their symbols and, in most cases, their definitions. These names and symbolsare recommendations. The definitions are given for identification of the quantities in the International System ofQuantities (ISQ), listed
28、 on the left hand pages of the table; they are not intended to be complete.The scalar, vectorial or tensorial character of quantities is pointed out, especially when this is needed for thedefinitions.In most cases only one name and only one symbol for the quantity are given; where two or more names
29、or twoor more symbols are given for one quantity and no special distinction is made, they are on an equal footing.When two types of italic letters exist (for example as with and ; and ; a and ; g and ) only one of theseis given. This does not mean that the other is not equally acceptable. It is not
30、recommended to give suchvariants different meanings. A symbol within parentheses implies that it is a reserve symbol, to be used when,in a particular context, the main symbol is in use with a different meaning.In this English edition, the quantity names in French are printed in an italic font, and a
31、re preceded by fr. Thegender of the French name is indicated by (m) for masculine and (f) for feminine, immediately after the noun inthe French name.0.3 Tables of units0.3.1 GeneralThe names of units for the corresponding quantities are given together with the international symbols and thedefinition
32、s. These unit names are language-dependent, but the symbols are international and the same in alllanguages. For further information, see the SI Brochure (8thedition 2006) from BIPM and ISO 80000-11).The units are arranged in the following way:a) The coherent SI units are given first. The SI units ha
33、ve been adopted by the General Conference onWeights and Measures (Confrence Gnrale des Poids et Mesures, CGPM). The use of coherent SI units1) To be published. a g3 EN ISO 80000-8:2007 (E)DIN EN ISO 80000-8:2008-01 is recommended; decimal multiples and submultiples formed with the SI prefixes are re
34、commended, eventhough not explicitly mentioned.b) Some non-SI units are then given, being those accepted by the International Committee for Weights andMeasures (Comit International des Poids et Mesures, CIPM), or by the International Organization of LegalMetrology (Organisation Internationale de Mtr
35、ologie Lgale, OIML), or by ISO and IEC, for use with the SI.Such units are separated from the SI units in the item by use of a broken line between the SI units and theother units.c) Non-SI units currently accepted by the CIPM for use with the SI are given in small print (smaller than the textsize) i
36、n the “Conversion factors and remarks” column.d) Non-SI units that are not recommended are given only in annexes in some parts of this InternationalStandard. These annexes are informative, in the first place for the conversion factors, and are not integralparts of the standard. These deprecated unit
37、s are arranged in two groups:1) units in the CGS system with special names;2) units based on the foot, pound, second, and some other related units.e) Other non-SI units are given for information, especially regarding the conversion factors, in informativeannexes in some parts of this International S
38、tandard.0.3.2 Remark on units for quantities of dimension one, or dimensionless quantitiesThe coherent unit for any quantity of dimension one, also called a dimensionless quantity, is the number one,symbol 1. When the value of such a quantity is expressed, the unit symbol 1 is generally not written
39、outexplicitly.EXAMPLE 1 Refractive index Prefixes shall not be used to form multiples or submultiples of this unit. Instead of prefixes, powers of 10 arerecommended.EXAMPLE 2 Reynolds number Considering that plane angle is generally expressed as the ratio of two lengths and solid angle as the ratio
40、oftwo areas, in 1995 the CGPM specified that, in the SI, the radian, symbol rad, and steradian, symbol sr, aredimensionless derived units. This implies that the quantities plane angle and solid angle are considered asderived quantities of dimension one. The units radian and steradian are thus equal
41、to one; they may either beomitted, or they may be used in expressions for derived units to facilitate distinction between quantities ofdifferent kinds but having the same dimension.0.4 Numerical statements in this International StandardThe sign is used to denote “is exactly equal to”, the sign is us
42、ed to denote “is approximately equal to”, andthe sign is used to denote “is by definition equal to”.Numerical values of physical quantities that have been experimentally determined always have an associatedmeasurement uncertainty. This uncertainty should always be specified. In this International St
43、andard, themagnitude of the uncertainty is represented as in the following example.EXAMPLEIn this example, , the numerical value of the uncertainty indicated in parentheses is assumed toapply to the last (and least significant) digits of the numerical value of the length . This notation is used when
44、represents the standard uncertainty (estimated standard deviation) in the last digits of . The numericalexample given above may be interpreted to mean that the best estimate of the numerical value of the length (when is expressed in the unit metre) is and that the unknown value of is believed to lie
45、 betweenand , with a probability determined by the standarduncertainty and the normal probability distribution of the values of .n = 1,53 1 = 1,53Re = 1,32 103= :=l = 2,347 82(32) ml = a(b) m ba lb all 2,347 82, l(2,347 82 0,000 32) m (2,347 82 + 0,000 32) m0,000 32 m l4 EN ISO 80000-8:2007 (E)DIN E
46、N ISO 80000-8:2008-01 0.5 Special remarks0.5.1 GeneralIn the explanations in the “Definition” column for quantities, it is assumed that systems are linear and that non-linear effects and effects due to anisotropy and superimposed flow are sufficiently small, that they may beneglected. Root-mean-squa
47、re values may be indicated by the subscript “eff”.0.5.2 Remark on logarithmic quantities and their unitsQuantities are independent of the choice of units in which the values of the quantities are expressed. Derivedunits are expressed in terms of base units according to the equations between the corr
48、esponding quantities. Instrict quantity calculus, it is therefore a circular definition if a unit is included in the definition of a quantity. Thiscould, however, be done if the unit is defined elsewhere. In most practical applications in acoustics, logarithmicquantities are defined as expressed in
49、the unit decibel, dB. This practice is applied in ISO 80000-8. For thefundamental definitions of logarithmic quantities, see ISO 80000-3:2006, items 3-21 and 3-22.5 EN ISO 80000-8:2007 (E)DIN EN ISO 80000-8:2008-01 1ScopeISO 80000-8 gives names, symbols and definitions for quantities and units of acoustics. Where appropriate,conversion factors are also given.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated ref
