Department of Occupational and Environmental Medicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
J Voice. 2011 Mar;25(2):166-72. doi: 10.1016/j.jvoice.2009.09.009. Epub 2010 Feb 19.
Although the relationship between noise exposure and vocal behavior (the Lombard effect) is well established, actual vocal behavior in the workplace is still relatively unexamined. The first purpose of this study was to investigate correlations between noise level and both voice level and voice average fundamental frequency (F₀) for a population of preschool teachers in their normal workplace. The second purpose was to study the vocal behavior of each teacher to investigate whether individual vocal behaviors or certain patterns could be identified. Voice and noise data were obtained for female preschool teachers (n=13) in their workplace, using wearable measurement equipment. Correlations between noise level and voice level, and between voice level and F₀, were calculated for each participant and ranged from 0.07 to 0.87 for voice level and from 0.11 to 0.78 for F₀. The large spread of the correlation coefficients indicates that the teachers react individually to the noise exposure. For example, some teachers increase their voice-to-noise level ratio when the noise is reduced, whereas others do not.
虽然噪声暴露与发声行为（伦巴第效应）之间的关系已得到充分证实，但工作场所的实际发声行为仍相对未被研究。本研究的第一个目的是调查噪声水平与幼儿园教师正常工作场所的声级和平均基频（F₀）之间的相关性。第二个目的是研究每位教师的发声行为，以研究是否可以识别个体发声行为或某些模式。使用可穿戴测量设备，为女性幼儿园教师（n=13）在工作场所获得了语音和噪声数据。计算了每个参与者的噪声水平与声级以及声级与 F₀ 之间的相关性，相关系数范围为 0.07 至 0.87 与声级相关，范围为 0.11 至 0.78 与 F₀ 相关。相关系数的广泛分布表明，教师对噪声暴露的反应因人而异。例如，一些教师在噪声降低时会增加声音与噪声的比值，而另一些教师则不会。
