Robertson A, Cooper-Peel C, Vos P
School of Medicine, East Carolina University, Greenville, NC 27858-4354, USA.
J Perinatol. 1999 Jul-Aug;19(5):362-6. doi: 10.1038/sj.jp.7200203.
Sound reduction strategies in the neonatal intensive care unit (NICU) must focus on the sources of excessive sound. We studied the relative contribution of personnel conversation and heating, ventilation, and air conditioning (HVAC) airflow by measuring several parameters of sound during four environmental conditions: unaltered ambient sound, HVAC airflow off, HVAC airflow and conversation off, and conversation off. All measurements were decreased by interrupting HVAC airflow and conversation. The reduction was greater when conversation was stopped. The method of sound reduction did not change the frequency distribution of sound. Attention to personnel conversation may be effective in lowering sound exposure in the NICU. The contribution of HVAC airflow should be measured in new constructions and renovations.
新生儿重症监护病房（NICU）的降噪策略必须聚焦于过多噪音的来源。我们通过在四种环境条件下测量声音的几个参数，研究了人员交谈以及供暖、通风与空调（HVAC）气流的相对贡献：未改变的环境声音、HVAC气流关闭、HVAC气流和交谈关闭、交谈关闭。通过中断HVAC气流和交谈，所有测量值都降低了。当交谈停止时，降幅更大。降噪方法并未改变声音的频率分布。关注人员交谈可能对降低NICU中的声音暴露有效。在新建和翻新建筑中应测量HVAC气流的贡献。
