International standards ISO 3382-2 and ISO 3382-3 are increasingly applied to determine the room acoustic conditions in open-plan offices because attention to noise control in such workplaces has increased. The precision of those standards in open-plan offices has not been published. The purpose of this study was to determine the precision of ISO 3382-2:2008 and ISO 3382-3:2012 in an open-plan office following the instructions of ISO 5725 standard. Furthermore, the results were analyzed in the light of ISO CD 3382-3:2020 involving improvements related to uncertainty. An accuracy experiment (a.k.a Round-Robin test, inter-laboratory test, intercomparison test) was arranged where nine independent participants conducted the measurements in the same open-plan office. For ISO 3382-3:2012, the reproducibility standard deviations were 530.5 dB, 1.3 dB, 1.3 dB, and 18% for spatial decay rate of speech (D_2,S), A-weighted SPL of speech at 4 m distance (L_p,A,S,4m), A-weighted SPL of background noise (L_p,A,B), and distraction distance (r_D). The corresponding values for ISO CD 3382-3:2020 were 0.3 dB, 1.1 dB, 0.6 dB, and 16%, respectively. The reproducibility standard deviations for reverberation time were 4.5–16% within 1/1-octave bands 125–8000 Hz. The measurement uncertainty of ISO CD 3382-3:2020 is smaller than that of ISO 3382-3:2012. The values depended mainly on between-laboratory differences while within-laboratory differences had only a marginal impact. The results can be used in the development of the standards.

国际标准ISO 3382-2和ISO 3382-3越来越多地用于确定开放式办公室的室内声学条件，因为这种工作场所对噪声控制的关注日益增加。这些标准在开放式办公室中的准确性尚未公布。这项研究的目的是按照ISO 5725标准的说明，在开放式办公室中确定ISO 3382-2：2008和ISO 3382-3：2012的精度。此外，根据ISO CD 3382-3：2020分析了结果，涉及不确定性方面的改进。安排了一个准确性实验（又名轮循测试，实验室间测试，比对测试），其中有9名独立参与者在同一开放式办公室中进行了测量。对于ISO 3382-3：2012，可再现性标准偏差为530.5 dB，1.3 dB，1。D _2，S），4 m距离处的A加权语音声压（L _{p，A，S，4m}），背景噪声的A加权SPL（L _p，A，B）和干扰距离（r _D） 。ISO CD 3382-3：2020的相应值分别为0.3 dB，1.1 dB，0.6 dB和16％。在125-8000 Hz的1/1倍频程内，混响时间的再现性标准偏差为4.5-16％。ISO CD 3382-3：2020的测量不确定度小于ISO 3382-3：2012的测量不确定度。这些值主要取决于实验室之间的差异，而实验室内部的差异仅具有很小的影响。结果可用于标准的制定。