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UNI EN ISO 3741:2009被替代

Acoustics - Determination Of Sound Power Levels Of Noise Sources Using Sound Pressure - Precision Methods For Reverberation Rooms

出版：Italian Standards

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基本信息

标准编号： UNI EN ISO 3741:2009

标准类别：Standard

出版单位：Italian Standards

标准页数：0

标准简介

Describes a direct method and a comparison method for determining the sound power level that would be produced by a source operating in an environment at standard meteorological conditions corresponding to a characteristic impedance of [rho]c = 400 N.s/m[3] (where [rho] is the density of air and c is the speed of sound). Also defines test room requirements, source location and general rules for operating conditions, instrumentation and techniques for obtaining an estimate of mean-square sound pressure levels from which the sound power levels of the source in octave or one-third-octave bands are calculated with a grade 1 accuracy.

标准备注

Supersedes UNI EN 23741 and UNI EN 23742. (07/2001)

本标准替代的旧标准

替代本标准的新标准

等同采用的国际标准

NF EN ISO 3741:2009 - Identical

NBN EN ISO 3741:2009 - Identical

NS EN ISO 3741:2009 - Identical