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Results for “Ear Protective Devices”
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Improving hearing conservation in the industrial workplace setting.
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[Exposure to high impulse noise: analytical methodology and experimental evaluation].
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[The auditory hazards of noise].
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[Characteristics of noise in different branches of industry and efficacy of attenuating it using noise-proof headphones].
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[Acoustic trauma].
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Noise. Quiet please.
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Noise. Looking for protection?
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Educating for hearing conservation.
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[Methods of calculating the noise load on the human body].
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Noise-induced hearing loss: the family physician's role.
Noise is an environmental health problem that has not received sufficient attention. Physicians should become knowledgeable about the medical consequences of excessive noise, support legislation to reduce the problem and promote programs aimed at noise control and prevention of hearing loss. Questions about noise and hearing should be incorporated into the medical history, and pure-tone audiometry should be a part of periodic physical evaluations.
Protection from noise.
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The effect of wearing time on hearing protector attenuation.
The effect of wearing time on attenuation was measured for three insert protectors, the E-A-R expandable foam, the Willson premolded vinyl with double flange, and the Bilsom soft polyethylene encapsulated glass fiber. Binaural detection thresholds in quiet were measured with and without the protectors worn at the initial insertion and after a period of one to one and one-half hours during which lunch was eaten. The difference between the open and closed ear thresholds provided a measure of attenuation. The subjects were 12 normal adults aged 20 to 37 years. Each participated in the three hearing protector conditions. The stimuli used were one-third octave noise bands centered at 500 Hz and 3150 Hz. The results showed that wearing time may reduce attenuation by as much as 10 dB, depending on the type of protector chosen.
Unilateral auditory occlusions and auditory hallucinations.
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Wearing proper protection prevents hearing loss in high-noise areas.
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[Hearing protectors and speech intelligibility during noise].
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[The process of encouraging wearing acoustic protectors in workers in a work place with deafening noise].
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Noise levels in cockpits of aircraft during normal cruise and considerations of auditory risk.
Noise data, including A-levels and C-minus-A values, are summarized for exposures associated with normal cruise flight in 13 groups of 593 aircraft; means and standard deviations are reported; degrees of auditory risk using OSHA-1983 criterion are presented; and at-the-ear protected and unprotected exposures are revealed. Mean A-levels were 95.0 for 528 fixed-wing; 100.9 for 65 rotary-wing; and 95.7 for all 593 aircraft. Of 13 sub-groups, the lowest mean A-level (85.5) was exhibited in the cockpits of tail-mounted turbojet/fan-powered aircraft, and the highest (105.0) was found in both reciprocating and turbine-powered twin-rotor helicopters. All mean A-levels exceeded the OSHA damage-risk criterion for 8 h.d-1 exposures. At-the-ear exposures while wearing hearing protection are presented. Results clearly illustrate the potential for auditory damage of unprotected aircrews. Hearing protection must be considered to effectively control routinely encountered exposures. The material and illustrations resulting from this study will help health and safety monitors during indoctrination and counseling of aircrews concerning the need to protect their hearing against noise exposures during normal and routine flight operations.