Cosa M, Nicoli M
Ann Ist Super Sanita. 1979;15(2):197-218.
A new series of noise measurements in 10 points of the central zone in Rome, corresponding to residential areas with commercial activity, to parks, to hospitals, and to a subway, have been carried out. Investigation has been protracted during 24 hours and each measure has lasted 20 minutes. For the survey a mobile acoustic unity of the Environmental Hygiene Laboratory, Department of Sanitary Engineering, of Istituto Superiore di Sanità has been employed. The unity is fitted with instruments for statistical analysis of noise in connection with a minicomputer. The used program has allowed to calculate L1, L10, L50, L90, standard deviation, Leq, LNP, TNI. On the basis of such measurements Leq 24, Ldn, CNEL, have been calculated. Collected data have been compared with limits of stated rules and with noise levels measured in other seven Italian towns.
在罗马市中心区域的10个地点进行了一系列新的噪声测量，这些地点分别对应有商业活动的居民区、公园、医院和地铁。测量持续了24小时，每次测量持续20分钟。此次调查使用了罗马高级卫生研究院卫生工程系环境卫生实验室的移动声学设备。该设备配备了与微型计算机相连的用于噪声统计分析的仪器。所使用的程序能够计算L1、L10、L50、L90、标准差、等效连续A声级（Leq）、噪声评价数（LNP）、交通噪声指数（TNI）。基于这些测量结果，计算出了24小时等效连续A声级（Leq 24）、日等效连续A声级（Ldn）、综合噪声评价（CNEL）。收集到的数据已与既定规则的限值以及在意大利其他七个城镇测得的噪声水平进行了比较。
