1、NORME INTERNATIONALE INTERNATIONAL STANDARD CE1 IEC 1183 Premire dition First edition 1994-05 E lectroacou st que - Etalonnage des sonomtres sous incidence alatoire et en champ diffus Electroacoustics - Random-incidence and diffuse-field calibration of sound level meters Numro de rfrence Reference n
2、umber CEMEC 1 183: 1994 Numros des publications Depuis le ler janvier 1997, les publications de la CE1 sont numrotes partir de 60000. Publications consolides Les versions consolides de certaines publications de la CE1 incorporant les amendements sont disponibles. Par exemple, les numros ddition 1.0,
3、 1.1 et 1.2 indiquent respectivement la publication de base, la publication de base incorporant lamendement 1, et la publication de base incorporant les amendements 1 et 2. Validit de la prsente publication Le contenu technique des publications de la CE1 est constamment revu par la CE1 afin quil ref
4、lte ltat actuel de la technique. Des renseignements relatifs la date de re- confirmation de la publication sont disponibles dans le Catalogue de la CEI. Les renseignements relatifs des questions ltude et des travaux en cours entrepris par le comit technique qui a tabli cette publication, ainsi que l
5、a liste des publications tablies, se trouvent dans les documents ci-dessous: Site web) de la CEl* Catalogue des publications de la CE1 Publi annuellement et mis jour rgulirement (Catalogue en ligne)* Disponible la fois au 4te web de la CEI et comme priodique imprim Bulletin de la CE1 Terminologie, s
6、ymboles graphiques et littraux En ce qui concerne la terminologie gnrale, le lecteur se reportera la CE1 60050: Vocabulaire Electro- technique International (VE i). Pour les symboles graphiques, les symboles littraux et les signes dusage gnral approuvs par la CEI, le lecteur consultera la CE1 60027:
7、 Symboles littraux 2 utiliser en lectrotechnique, la CE1 6041 7: Symboles graphiques utilisables sur le matriel. Index, rele v et compilation des feuilles individuelles, et la CE1 60 61 7: Symboles graphiques pour schmas. * Voir adresse site web, sur la page de titre. Num be ring As from 1 January 1
8、997 all IEC publications are issued with a designation in the 60000 series. Consolidated publications Consolidated versions of some IEC publications including amendments are available. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication in
9、cor- porating amendment 1 and the base publication incorporating amendments 1 and 2. Validity of this publication The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology. Information relating to the date of the re
10、confirmation of the publication is available in the IEC catalogue. Information on the subjects under consideration and work in progress undertaken by the technical com- mittee which has prepared this publication, as well as the list of publications issued, is to be found at the following IEC sources
11、: IEC web site Catalogue of IEC publications Published yearly with regular updates (On-line catalogue)* Available both at the IEC web site and as a printed periodical IEC Bulletin Terminology, graphical and letter symbols For general terminology, readers are referred to I EC 60 050: International El
12、ectrotechnical Vocabulary (IEV). For graphical symbols, and letter symbols and signs approved by the IEC for general use, readers are referred to publications IEC 60027: Letter symbols to be used in electrical technology, I EC 6041 7: Graphical symbols for use on equipment. Index, survey and compila
13、tion of the single sheets and IEC 60617: Graphical symbols for diagrams. * See web site address on title page. NORME INTERNATIONALE INTERNATIONAL STANDARD CE1 IEC 1183 Premire dition First edition 1994-05 Elect roacoust que - Etalonnage des sonomtres sous incidence alatoire et en champ diffus Electr
14、oacoustics - Random-incidence and diffuse-field calibration of sound level meters 0 CE1 1994 Droits de reproduction rservs - Copyright - all rights reserved Aucune paltie de tie pubikation ne peut any IEC National Committee interested in the subject dealt with may participate in this preparatory wor
15、k. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations
16、. 2) The formal decisions or agreements of the IEC on technical matters, prepared by technical committees on which all the National Committees having a special interest therein are represented, express, as nearly as possible, an international consensus of opinion on the subjects dealt with. 3) They
17、have the form of recommendations for international use published in the form of standards, technical reports or guides and they are accepted by the National Committees in that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standa
18、rds transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. International Standard IEC 1183 has been prepared by IEC technical committe
19、e 29: Electroacoustics. The text of this standard is based on the following documents: Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. Annexes A and B are for information only. -6- 1183OCEI: 1994 LECTROACOUSTIQUE - T
20、ALONNAGE DES SONOMTRES SOUS INCIDENCE ALATOIRE ET EN CHAMP DIFFUS 1 Domaine dapplication 1.1 La prsente Norme internationale dcrit une mthode dtalonnage en champ libre pour dterminer les niveaux de sensibilit sous incidence alatoire des sonomtres. En outre, elle dcrit une mthode dtalonnage en champ
21、diffus pour dterminer les niveaux de sensibilit en champ diffus. 1.2 Pour les besoins de la prsente Norme internationale, le niveau de sensibilit en champ diffus et le niveau de sensibilit sous incidence alatoire sont interchangeables. La slection de la mthode dtalonnage dpend des possibilits. 1.3 L
22、es rsultats des talonnages mens conformment cette norme dpendent des parties du sonomtre exposes au champ acoustique. 1.4 Pour les besoins de la prsente norme, un sonomtre est considr comme tant un sonomtre classique, un sonomtre intgrateur-moyenneur, ou tout autre systme de mesure acoustique. 2 Rfr
23、ences normatives Les documents normatifs suivants contiennent des dispositions qui, par suite de la rfrence qui y est faite, constituent des dispositions valables pour la prsente norme internationale. Au moment de la publication, les ditions indiques taient en vigueur. Tout document normatif est suj
24、et rvision et les parties prenantes aux accords fonds sur la prsente norme internationale sont invites rechercher la possibilit dappliquer les ditions les plus rcentes des documents normatifs indiqus ci-aprs. Les membres de la CE1 et de IISO possdent le registre des normes internationales en vigueur
25、. CE1 50(801): 1992, Vocabulaire Electrotechnique International (VEI) - Chapitre 807: Acoustique et lectroacoustique CE1 651: 1979, Sonomtres CE1 804: 1985, Sonomtres intgrateurs-moyenneurs CE1 1094-1 : 1992, Microphones de mesure - Partie 1: Spcifications des microphones talons de laboratoire CE1 1
26、260: 199X, Electroacoustique - Filtres de bande doctave et de bande dune fraction doctave (en prparation) IS0 266: 1975, Acoustique - Frquences normales pour les mesurages (en rvision) IS0 3741 : 1988, Acoustique - Dtermination des niveaux de puissance acoustique mis par les sources de bruit - Mthod
27、es de laboratoire en salles rverbrantes pour les sources large bande IS0 3745: 1977, Acoustique - Dtermination des niveaux de puissance acoustique mis par les sources de bruit - Mthodes de laboratoire pour les salles anchoque et semi-anchoque. 1183OIEC: 1994 -7- ELECTROACOUSTICS - RANDOM-INCIDENCE A
28、ND DIFFUSE-FIELD CALIBRATION OF SOUND LEVEL METERS 1 Scope 1 .1 This International Standard describes a free-field calibration method for determining random-incidence sensitivity levels of sound level meters. Additionally, the standard describes a diffuse-field calibration method for determining dif
29、fuse-field sensitivity levels. 1.2 For the purpose of this International Standard, diffuse-field sensitivity level may be used interchangeably with random-incidence sensitivity level. Selection of calibration method depends on the facility available. 1.3 which components of a sound level meter are e
30、xposed to the sound field. Results of calibrations conducted in accordance with this standard depend upon 1.4 For the purpose of this standard, a sound level meter is considered to be a conventional sound levei meter, an integrating-averaging sound level meter, or any other sound measuring system. 2
31、 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agree
32、ments based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of normative documents indicated below. Members of I EC and IS0 maintain registers of currently valid International Standards. IEC 50(801): 1992, International Electrotechnic
33、al Vocabulary (IEV), Chapter 807: Acoustics and electroacoustics IEC 651 : 1979, Sound level meters IEC 804: 1985, Integrating-averaging sound level meters IEC 1094-1 : 1992, Measurement microphones - Part 7: Specifications for laboratory standard microphones IEC 1260: 199X, Electroacoustics - Octav
34、e-band and fractional octave-band filters (in preparation) IS0 266: 1975, Acoustics - Preferred frequencies for measurements (revision in preparation) IS0 3741 : 1988, Acoustics - Determination of sound power levels of noise sources - Precision methods for broad-band sources in reverberation rooms IS0 3745: 1977, Acoustics - Determination of sound power levels of noise sources - Precision methods for anechoic and semi-anechoic rooms
