ITU-T P 54 FRENCH-1988 SOUND LEVEL METERS (APPARATUS FOR THE OBJECTIVE MEASUREMENT OF ROOM NOISE)《声级计(客观测量室内噪声的仪器)》.pdf

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ITU-T P 54 FRENCH-1988 SOUND LEVEL METERS (APPARATUS FOR THE OBJECTIVE MEASUREMENT OF ROOM NOISE)《声级计(客观测量室内噪声的仪器)》.pdf_第1页
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1、UNION INTERNATIONALE DES TLCOMMUNICATIONS5)4 4 0 SECTEUR DE LA NORMALISATIONDES TLCOMMUNICATIONSDE LUIT15!,)4 $% ,! 42!.3-)33)/. 4 , 0(/.)15%!00!2%),3 $% -%352%3 /“*%#4)6%33/./- 42%3 !00!2%),3 0/52 ,! -%352%/“*%#4)6% $%3 “25)43 $% 3!,% 2ECOMMANDATION 5)4 4c0 0 (Extrait du ,IVRE “LEU)NOTES1 La Recomm

2、andation P.54 de l UIT-T a t publie dans le tome V du Livre Bleu. Ce fichier est un extrait du LivreBleu. La prsentation peut en tre lgrement diffrente, mais le contenu est identique celui du Livre Bleu et les conditionsen matire de droits dauteur restent inchanges (voir plus loin).2 Dans la prsente

3、 Recommandation, le terme Administration dsigne indiffremment une administration detlcommunication ou une exploitation reconnue. UIT 1988, 1993Droits de reproduction rservs. Aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque formeque ce soit et par aucun procd, lectron

4、ique ou mcanique, y compris la photocopie et les microfilms, sans laccord crit delUIT.Recommandation P.54Tome V - Rec. P.542 Tome V - Rec. P.54SONOMTRES (APPAREILS POUR LA MESURE OBJECTIVE DES BRUITS DE SALLE)(modifie Mar del Plata, 1968 et Genve, 1972)Le CCITT recommande dadopter le sonomtre spcifi

5、 en 1; cet appareil est utiliser, dans la plupart des cas,avec les filtres doctave, de demi-octave et de tiers doctave spcifis en 2.Rfrences1 Norme de la Commission Electrotechnique Internationale Sonomtres, publication de la CEI 651(179), Genve,1979.2 Recommandation de la Commission Electrotechnique Internationale Filtres de bandes doctave, de demi-octaveet de tiers doctave destins lanalyse des bruits et des vibrations, publication de la CEI 225, Genve, 1966.

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