Results 251 to 260 of about 117,586 (276)

On the Behavior of Ear Protection Devices below 1000 cps

The Journal of the Acoustical Society of America, 1958
An extensive set of measurements has been made on various type of ear protection devices, generally consisting of a hard-shelled volume coupled to the head by an annular pad filled with various materials. Attenuation measurements were made with a miniature pressure microphone.
openaire   +1 more source

A custom‐built single‐channel in‐ear electroencephalography sensor for sleep phase detection: an interdependent solution for at‐home sleep studies

Journal of Sleep Research
Sleep is vital for health. It has regenerative and protective functions. Its disruption reduces the quality of life and increases susceptibility to disease.
Daniel Filipe Borges, Joana Isabel Soares, Heloísa Silva, J. Felgueiras, Carla Batista, Simão Ferreira, N. Rocha, Alberto Leal   +7 more
semanticscholar   +1 more source

Evaluation of level-dependent performance of in-ear hearing protection devices using an enclosed sound source

The Journal of the Acoustical Society of America, 2014
Hearing protection devices are increasingly designed with the capability to protect against impulsive sound. Current methods used to test protection from impulsive noise, such as blasts and gunshots, suffer from various drawbacks and complex, manual experimental procedures.
Theodore F. Argo, G. Douglas Meegan
openaire   +1 more source

Calibration of an In-Ear Dosimeter for a Single Hearing Protection Device

2014
Abstract : Military personnel working in high noise environments could be exposed to noise levels up to 150 dB. Daily noise exposure limits are based on both ambient noise levels and the duration of time spent in that noise environment. NAVAIR led ATI in the development of a ship-suitable in-ear dosimeter integrated into a single hearing protector, and
Valerie S. Bjorn, Melissa A. Theis, Richard L. McKinley, Hilary L. Gallagher   +3 more
openaire   +1 more source

Occlusion effects of hearing protection device on ear canal transfer function and cochlear injury from impulse noise exposure

The Journal of the Acoustical Society of America, 2018
The objective of this paper is to present a new finding on the effects of hearing protection devices (HPDs) on the ear canal (EC) transfer function (TFEC2ED). Specifically, we show that when an earmuff is worn, the TFEC2ED is not the same as that for the bare head, leading to a significant difference in cochlear injury prediction.
openaire   +1 more source

Field evaluation of the hazard to hearing of a proposed 25 meter range to personnel wearing ear protective devices.

Report. Army Medical Research Laboratory, 1962
J. Fletcher, M. Loeb, G. S. Harker
semanticscholar   +1 more source

Experimental Evaluation of Blast Loadings on the Ear and Head with and Without Hearing Protection Devices

This work will describe the experimental evaluation of blast loadings on post mortem human surrogates instrumented to obtain pressure and strain measurements at various locations as a precursor to studies on biological models to investigate neurological damage to the auditory cortex.
Tim J. Walilko, Ryan D. Lowe, Ted F. Argo, G. Doug Meegan, Nathaniel T. Greene, Daniel J. Tollin   +5 more
openaire   +1 more source

ATTENUATION CHARACTERISTICS OF FOUR EAR PROTECTIVE DEVICES

, 1958
J. Fletcher, C. A. Silver
semanticscholar   +1 more source

Learning accurate personal protective equipment detection from virtual worlds

Multimedia tools and applications, 2020
Marco Di Benedetto, F. Carrara, Enrico Meloni, G. Amato, Fabrizio Falchi, C. Gennaro   +5 more
semanticscholar   +1 more source

Effects of low speed wind on the recognition/identification and pass-through communication tasks of auditory situation awareness afforded by military hearing protection/enhancement devices and tactical communication and protective systems

International Journal of Audiology, 2016
Kichol Lee, J. Casali
semanticscholar   +1 more source