Nataletti P, Sisto R, Pieroni A, Sanjust F, Annesi D
Istituto Superiore per la Prevenzione e la Sicurezza del Lavoro (ISPESL), Dipartimento Igiene del Lavoro, Laboratorio Agenti Fisici, Monteporzio Catone, Roma.
G Ital Med Lav Ergon. 2007 Jul-Sep;29(3 Suppl):496-8.
The sound exposure of classic orchestra musicians is not well assessed in Italy even though the protectionistic law includes all the working environments, as stated in the European Directive 2003/10/EC relative to the protection of workers against noise-induced damage. Scientific data in the literature show that the musicians are exposed to high daily personal exposure levels. These levels can systematically exceed the 85 dB(A) in the case of percussionists. In this study, preliminary results are shown relative to an experimental campaign performed in a lyric National Theatre. The aim of the study was the assessment of the risk due to high sound level in the theatre musicians and their cochlear functionality. The noise levels were measured by using wearable phonometers and multichannel sound analyzers. The signals were recorded during the whole working time in the rehearsal hall and in the fossa. The cochlear functionality was monitored before and immediately after rehearsal in a sample of volunteers by means of otoacoustic emission tests. Both TEOAE and DPOAE were measured using the ILO292 portable system. The data show that OAE-based tests can effectively discriminate between different classes of exposure. A good correlation was found between the daily exposure level and the DPOAE level.
尽管意大利的保护法涵盖了所有工作环境（如欧洲指令2003/10/EC中所述，涉及保护工人免受噪声引起的损害），但该国古典管弦乐队音乐家的噪声暴露情况并未得到很好的评估。文献中的科学数据表明，音乐家每天的个人暴露水平很高。对于打击乐手来说，这些水平可能会系统性地超过85 dB(A)。在本研究中，展示了在一家国立抒情剧院进行的一项实验活动的初步结果。该研究的目的是评估剧院音乐家因高声级而面临的风险及其耳蜗功能。使用可穿戴声级计和多通道声音分析仪测量噪声水平。在排练厅和乐池的整个工作时间内记录信号。通过耳声发射测试，在一组志愿者中于排练前和排练后立即监测耳蜗功能。使用ILO292便携式系统测量瞬态诱发耳声发射（TEOAE）和畸变产物耳声发射（DPOAE）。数据表明，基于耳声发射的测试可以有效区分不同程度的暴露。发现每日暴露水平与DPOAE水平之间存在良好的相关性。
