ISO 3741检测标准ISO 3741-中析研究所检测

(CMA)

(CNAS)

(ISO)

(高新技术企业)

ISO 3741相关标准参考信息

KS I ISO 3741-2022 声学.用声压测定噪声源的声功率级和声能级.混响试验室的精确方法
简介：
信息：ICS：17.140.01 CCS：发布：2022-09-13 实施：

KS I ISO 3741-2016
简介：
信息：ICS：17.140.01 CCS：发布：2016-12-28 实施：

GOST R ISO 3741-2013 声学. 利用声压测定噪声源的声功率级和声能量级. 混响试验室精密法
简介：
信息：ICS：17.140.50 CCS：发布：2013 实施：2014-12-01

DS/EN ISO 3741-2011
简介：This standard specifies methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured in a reverberation test room, the requirements for which are stated, from that noise source (machinery or equipment) located in the room.
信息：ICS：17.140.01 CCS：发布：2011-02-11 实施：2011-02-11

LST EN ISO 3741-2011
简介：
信息：ICS：17.140.01 CCS：发布：2011-01-31 实施：2011-01-31

DIN EN ISO 3741-2011 声学.声压法测定噪声源和声功率级.响室精密法(ISO 3741-2010);德文版本EN ISO 3741-2010
简介：
信息：ICS：17.140.01 CCS：Z32 发布：2011-01 实施：

BS EN ISO 3741-2010 声学.声压法测定噪声源声功率级.混响室精密法
简介：This International Standard specifies methods for determining the sound power level or sound energy level ofa noise source from sound pressure levels measured in a reverberation test room. The sound power level(or, in the case of noise bursts or transient noise emission, the sound energy level) produced by the noisesource, in frequency bands of width one-third-octave, is calculated using those measurements, includingcorrections to allow for any differences between the meteorological conditions at the time and place of the testand those corresponding to a reference characteristic impedance. Measurement and calculation proceduresare given for both a direct method and a comparison method of determining the sound power level and thesound energy level.In general, the frequency range of interest includes the one-third-octave bands with mid-band frequenciesfrom 100 Hz to 10 000 Hz. Guidelines for the application of the specified methods over an extended frequencyrange in respect to lower frequencies are given in Annex E. This International Standard is not applicable tofrequency ranges above the 10 000 Hz one-third-octave band.NOTE For higher frequencies, the methods specified in ISO 9295 can be used.
信息：ICS：17.140.01 CCS：Z32 发布：2010-10-31 实施：2010-10-31

ISO 3741-2010 声学.声压法测定噪声源声功率级.混响室精密法
简介：This International Standard specifies methods for determining the sound power level or sound energy level ofa noise source from sound pressure levels measured in a reverberation test room. The sound power level(or, in the case of noise bursts or transient noise emission, the sound energy level) produced by the noisesource, in frequency bands of width one-third-octave, is calculated using those measurements, includingcorrections to allow for any differences between the meteorological conditions at the time and place of the testand those corresponding to a reference characteristic impedance. Measurement and calculation proceduresare given for both a direct method and a comparison method of determining the sound power level and thesound energy level.In general, the frequency range of interest includes the one-third-octave bands with mid-band frequenciesfrom 100 Hz to 10 000 Hz. Guidelines for the application of the specified methods over an extended frequencyrange in respect to lower frequencies are given in Annex E. This International Standard is not applicable tofrequency ranges above the 10 000 Hz one-third-octave band.NOTE For higher frequencies, the methods specified in ISO 9295 can be used.
信息：ICS：17.140.01 CCS：Z32 发布：2010-10-01 实施：2010-10-01

ISO 3741:2010 声学——使用声压测定噪声源的声功率级和声能级——混响试验室的精度方法
简介：
信息：ICS：17.140.01 CCS：发布：2010-09-21 实施：

ANSI/ISO 3741-2010 声学.用声压测定噪声源声功率级和声能级.回响试验室中的精密方法
简介：This National Standard specifies methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured in a reverberation test room. Measurement and calculation procedures are given for both a direct method and a comparison method of determining the sound power level and the sound energy level.
信息：ICS：17.140.01 CCS：Z32 发布：2010 实施：

EN ISO 3741-2010 声学.声压法测定噪声源声功率级.混响室精密法
简介：This International Standard specifies methods for determining the sound power level or sound energy level of a noise source from sound pressure levels measured in a reverberation test room. The sound power level (or, in the case of noise bursts or transient noise emission, the sound energy level) produced by the noise source, in frequency bands of width one-third-octave, is calculated using those measurements, including corrections to allow for any differences between the meteorological conditions at the time and place of the test and those corresponding to a reference characteristic impedance. Measurement and calculation procedures are given for both a direct method and a comparison method of determining the sound power level and the sound energy level.
信息：ICS：17.140.01 CCS：发布：2010 实施：

DIN EN ISO 3741-2009 声学.用声压测定噪声源声音功率级.回响室中的精密方法(ISO 3741:1999,包括勘误11:2001),德文版本 EN ISO 3741:2009
简介：1.1 This International Standard specifies a direct method and a comparison method for determining the soundpower level that would be produced by a source operating in an environment at standard meteorological conditionscorresponding to a characteristic impedance of pc= 400 N.s/m3 (where p is the density of air and c is the speed ofsound). It specifies 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 thesound power levels of the source in octave or one-third-octave bands are calculated with a grade 1 accuracy. Thequantities to be measured are time-averaged sound pressure levels in frequency bands. The quantities to bedetermined are sound power levels, A-weighted and in frequency bands. Other quantities, which are optional, aresound power levels with other frequency weightings calculated from the measurements in frequency bands. Thisstandard does not provide the means to determine directivity and temporal variation of sound from a source.In general, the frequency range of interest includes the one-third-octave bands with midband frequencies from100 Hz to 10 000 Hz. Guidelines for the application of the specified methods in an extended frequency range inrespect to lower frequencies are given in annex C. This International Standard is not applicable to frequency rangesabove the 10 O00 Hz one-third-octave band. For higher frequencies the use of methods given in ISO 9295 isrecommended.1.2 The method specified in this International Standard is suitable for steady noise with broad-band, narrow-bandand discrete-frequency components as described in ISO 12001. The noise may be emitted from a device, machine,component or sub-assembly.This International Standard is applicable to noise sources with volumes which are preferably not greater than 2 % ofthe volume of the reverberation room used for the test. For sources with volumes greater than 2 % of the roomvolume, the standard deviations given by Table 2 could be exceeded.
信息：ICS：17.140.01 CCS：发布：2009-11 实施：

EN ISO 3741-2009 声学.声压法测定噪声源声功率级.混响室精密法
简介：
信息：ICS： CCS：发布：2009-07-01 实施：

KS I ISO 3741-2002 声学.声压法测定噪声源声功率级.混响室精密法
简介：1.1 일반 사항 이 규격은 ρc = 400Nㆍs/m3(여기에서 ρ는 공기의 밀도,
信息：ICS：17.140.01 CCS：Z32 发布：2002-08-31 实施：2002-08-31

ISO 3741 CORR 1-2001 声学声压法测定噪声源声功率级混响室精密法技术勘误1
简介：This is Technical Corrigendum 1 to ISO 3741-1999 (Acoustics — Determination of sound power levels of noise sources using sound pressure — Precision methods for reverberation rooms)
信息：ICS：17.140.01 CCS：Z32 发布：2001-03 实施：

EN ISO 3741-1999
简介：
信息：ICS：/ CCS：/ 发布：1999-08-01 实施：2005-11-21

ISO 3741-1999 声学声压法测定噪声源声功率级混响室精密法
简介：1 This International Standard specifies 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 ρc = 400 N·s/m (where ρ is the density of air and c is the speed of sound). It specifies 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. The quantities to be measured are time-averaged sound pressure levels in frequency bands. The quantities to be determined are sound power levels, A-weighted and in frequency bands. Other quantities, which are optional, are sound power levels with other frequency weightings calculated from the measurements in frequency bands. This standard does not provide the means to determine directivity and temporal variation of sound from a source.In general, the frequency range of interest includes the one-third-octave bands with midband frequencies from 100 Hz to 10 000 Hz. Guidelines for the application of the specified methods in an extended frequency range in respect to lower frequencies are given in annex C. This International Standard is not applicable to frequency ranges above the 10 000 Hz one-third-octave band. For higher frequencies the use of methods given in ISO 9295 is recommended.2 The method specified in this International Standard is suitable for steady noise with broad-band, narrow-band and discrete-frequency components as described in ISO 12001. The noise may be emitted from a device, machine, component or sub-assembly.This International Standard is applicable to noise sources with volumes which are preferably not greater than 2 % of the volume of the reverberation room used for the test. For sources with volumes greater than 2 % of the room volume, the standard deviations given by Table 2 could be exceeded.
信息：ICS：17.140.01 CCS：Z32 发布：1999-08 实施：