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3 results on '"Annesi, Diego"'

1. Extra-Auditory Effects from Noise Exposure in Schools: Results of Nine Italian Case Studies.

Author

Cotana, Franco, Asdrubali, Francesco, Arcangeli, Giulio, Luzzi, Sergio, Ricci, Giampietro, Busa, Lucia, Goretti, Michele, Tortorella, Alfonso Antonio Vincenzo, Pulella, Paola, Domenighini, Piergiovanni, Gambacorta, Valeria, Guattari, Claudia, Cirimbilli, Federica, Nicolini, Andrea, Nataletti, Pietro, Annesi, Diego, Sanjust, Filippo, and Cerini, Luigi

Subjects
ACOUSTIC measurements, TEACHER attitudes, GYMNASIUMS, AUDITORIUMS, KINDERGARTEN facilities
Abstract

Noise exposure may cause auditory and extra-auditory effects. School teachers and students are exposed to high noise levels which have an impact on perceptual-cognitive and neurobehavioral aspects. The latter influence teaching conditions and student school performance. A Protocol was defined and parameters to be investigated were identified for acoustic characterization of unoccupied and occupied school environments, assessment of users by means of questionnaires completed by teachers and students, and vocal effort evaluation. Classrooms, laboratories, auditoriums, gymnasiums, common areas, canteens and outdoor areas were analysed in terms of acoustic features and identification of the origin of noise. The Protocol was tested in three kindergartens, three primary schools and three secondary schools placed in Rome, Florence and Perugia. Results of nine case studies are presented, including comparisons of objective and subjective investigations. Generally, the acoustic performances of the spaces under investigation do not meet the requirements of current Italian legislation. In particular, student activity determines high noise levels in laboratories, gymnasiums, and canteens. Students notice that noise mainly causes loss of concentration, fatigue, boredom, and headache. The outcomes of this research will be the starting point to define strategies and solutions for noise control and mitigation in schools and to draft guidelines for the acoustical school design. [ABSTRACT FROM AUTHOR]

Published
2023
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2. HEARING PROTECTION DEVICES WITH ACTIVE ATTENUATION CONTROL FOR QUARRY EMPLOYMENT.

Author

Degan, GuidoAlfaro, Annesi, Diego, Antonucci, Andrea, Coltrinari, Gianluca, Lippiello, Dario, and Nataletti, Pietro

Subjects
*HEARING protection, *OCCUPATIONAL diseases, *QUARRIES & quarrying, *INSERTION loss (Telecommunication), *INDUSTRIAL hygiene, *FREQUENCY spectra, *FISH food
Abstract

Occupational diseases linked to noise risk are still one of the most important employment problems, particularly in the quarry activities. Many negative effects on human health can arise after long exposure to noise in an occupational context. To protect workers' health and prevent hearing problems, employers must provide to workers with hearing protection equipment.In recent years, however, there have been many problems with the use of hearing protection devices. These have a highly mitigating effect but can isolate the user from the outside environment, as transit of a vehicle or movement of a digger. This aspect must be treated with care because the workers cannot hear the sound of a hazard alarm or communication with other people during daily activities, for example in a quarry site. Generally, these types of hearing protection devices are made using an exclusively passive mechanism system, which is the related to the insertion loss. For this reason, an experimental campaign was carried out for the purpose of analyze the characteristics of devices equipped with electronic sound amplification systems. The tests were carried out in a sound laboratory with a special noise source on a human mannequin in order to replicate as much as possible the real noise exposure. The aim of the tests was to analyze the behavior of hearing protectors under different noise levels in order to comprehend the degree of effective protection for workers. The signal analysis was carried out in the third octave band, calculating the different noise levels in the frequency spectrum for the different noise levels of the source. The data obtained show that electronically controlled protection devices allow sound to be heard from the environment but at the same time protect against dangerous high noise levels. The results obtained demonstrate the importance of the performance of these devices compared to those based on insertion loss. [ABSTRACT FROM AUTHOR]

Published
2020
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3. Assessment of noise exposure for basketball sports referees

Author

Pietro Nataletti, Paolo Lenzuni, Luigi Maffei, Antonio Moschetto, Giuseppe Ciaburro, Diego Annesi, Massimiliano Masullo, Masullo, Massimiliano, Lenzuni, Paolo, Maffei, Luigi, Nataletti, Pietro, Ciaburro, Giuseppe, Annesi, Diego, and Moschetto, Antonio

Subjects
Engineering, Basketball, Microphone, Acoustics, Occupational noise exposure, 01 natural sciences, 03 medical and health sciences, 0302 clinical medicine, Noise exposure, Occupational Exposure, 0103 physical sciences, occupational noise exposure, Humans, Sound pressure, 010301 acoustics, Simulation, business.industry, Public Health, Environmental and Occupational Health, Experimental data, Oblique case, basketball referees, indoor sporting arena, 030210 environmental & occupational health, Noise, Sound, Hearing Loss, Noise-Induced, Italy, Noise, Occupational, business
Abstract

Dosimetric measurements carried out on basketball referees have shown that whistles not only generate very high peak sound pressure levels, but also play a relevant role in determining the overall exposure to noise of the exposed subjects. Because of the peculiar geometry determined by the mutual positions of the whistle, the microphone, and the ear, experimental data cannot be directly compared with existing occupational noise exposure and/or action limits. In this article, an original methodology, which allows experimental results to be reliably compared with the aforementioned limits, is presented. The methodology is based on the use of two correction factors to compensate the effects of the position of the dosimeter microphone (fR) and of the sound source (fS). Correction factors were calculated by means of laboratory measurements for two models of whistles (Fox 40 Classic and Fox 40 Sonik) and for two head orientations (frontal and oblique).Results sho w that for peak sound pressure levels the values of fR and fS, are in the range -8.3 to -4.6 dB and -6.0 to -1.7 dB, respectively. If one considers the Sound Exposure Levels (SEL) of whistle events, the same correction factors are in the range of -8.9 to -5.3 dB and -5.4 to -1.5 dB, respectively. The application of these correction factors shows that the corrected weekly noise exposure level for referees is 80.6 dB(A), which is slightly in excess of the lower action limit of the 2003/10/EC directive, and a few dB below the Recommended Exposure Limit (REL) proposed by the National Institute for Occupational Safety and Health (NIOSH). The corrected largest peak sound pressure level is 134.7 dB(C) which is comparable to the lower action limit of the 2003/10/EC directive, but again substantially lower than the ceiling limit of 140 dB(A) set by NIOSH.

Published
2016
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