Personal Hearing Protection including Active Noise Reduction
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چکیده
(Les dispositifs de protection de l'ouie, y compris l'atténuation du bruit actif) The material in this publication was assembled to support a Lecture Series under the sponsorship of the Human Factors and Medicine Panel (HFM)
منابع مشابه
Effects of Exposure to Impact Noise on the Hearing of Armed Forces and Evaluation of the Methods to Control and Decrease its Consequences: A Review Study
Background and Aim: Exposure to impact noise (short-term, high intensity) higher than permitted levels results in injury to the auditory system. Armed forces are one of the occupational groups exposed to these types of noises resulting from gunshots. In this study, relevant articles and research on the adverse effects of impact noise, hearing loss, and tinnitus in armed forces and effective con...
متن کاملAssessment and Standardization of Personal Hearing Protection including Active Noise Reduction
The performance of passive hearing protection is normally quantified by the sound attenuation or insertion loss (IL). The IL allows prediction of the noise level at the eardrum for a given ambient noise spectrum. A subjective test (with test-signal levels at the threshold of hearing) is normally used to measure the sound attenuation. Active noise reduction requires a different assessment method...
متن کاملطراحی و ساخت آداپتور آزمون حفاظهای شنوایی
Introduction: To determine the effectiveness of hearing protective devices that lack the technical information are one of the major challenges of occupational health experts to judge the impact of this exposure on reducing the level of occupational exposure to noise. The aim of this study was to design a built a hearing test adapter and expriment it to determine the reduction rate of earmuffs a...
متن کاملPassive Hearing Protection Systems and Their Performance
While ideally noise should be reduced at the source, in the military environment the most effective solution in terms of both cost and operational effectiveness has been to provide personnel with personal hearing protection. This protection may be in the form of either an earplug that occludes the ear canal or a circumaural protector that inserts a barrier between the ambient noise and the ear....
متن کاملارزیابی میزان کاهندگی صدای گوشی های ایرماف رایج برمبنای روش میدانی میکروفن داخل گوش در محیط های کاری
Background and aims Nominal noise reduction rating of the earmuff manufacturers can be different compared with the actual noise attenuation rating. The current study aimed to determine the actual noise reduction rate of current hearing protection devices in the real workplaces using a field microphone in real ear method (FMIRE). Methods: In this cross-sectional study, five common earmuffs we...
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تاریخ انتشار 2005