In this paper, we examine how covering one or both external ears affects sound localization on the horizontal plane. In our experiments, we cover subjects’ pinnae and external auditory canals with headphones, earphones and earplugs, and conduct a sound localization test. The results indicate that front-back confusion rates increase when covering both external ears with open-air headphones, and ...

BACKGROUND Workplace safety regulations seek to mitigate noise-induced hearing loss (NIHL), conventionally associated with the shipbuilding industry. Despite this, are workers still predisposed to NIHL? AIMS To study the prevalence of NIHL among noise-exposed subjects in the shipbuilding industry in Goa and to compare it with that among the non-exposed population working in the same industry ...

This research project has compared the speech recognition scores for test fragments recorded in different kinds of realistic industrial noise, with both standard and active earplugs. The standard protectors block the incoming sound whereas the active work level-dependent. Acoustical analyses reveal the importance of global input sound pressure levels, especially for speech recognition with stan...

The stimuli that can come from the care environment and development of disease influence quality sleep patients in intensive because they reduce secretion melatonin. In contrast, noise excessive lighting ward will a circadian rhythm, impacting parturient disorders (sleep disorders). Therefore, nursing interventions to improve normal rhythms are needed patient's quality. Wearing earplugs eye mas...