Results 211 to 220 of about 121,872 (282)
Effects of Aircraft Noise on Pilots' Auditory Perception.
Noise HealthSong L, Liu M, Li S, Piao Y.
europepmc +1 more source
Protective ear covering device
The Journal of the Acoustical Society of America, 1998 A single piece protective ear covering device is provided. The device is designed to protect the ear from heat and hairdressing preparations while the hair of the user is being treated. The device has a pair of mutually opposed ear coverings having a drawstring threaded therethrough and through a central strap for adjusting the ear coverings to a ...
Jacquelin E. Wright
semanticscholar +3 more sources
A critical analysis of attenuation effects of different types of ear protective devices
Indian Journal of Otolaryngology, 1991 The present study was undertaken to evaluate the noise attenuation characteristics of different types of Ear protective Devices which are commonly used. 20 healthy normal subjects’ open and closed hearing thresholds (with the usage of ear protective device) were recorded in an anechoic chamber and the attenuation charactaristics at 8 discrete ...
Akshobhya Rao, BN Pranesh Rao
semanticscholar +3 more sources
The Journal of the Acoustical Society of America, 2023 High level sound exposure can cause substantial injury to the auditory system, motivating efforts to predict and prevent this injury. Measurement techniques using acoustic manikins are effective for low and moderate sound levels, but nonlinear effects in the middle ear and alternate sound transmission pathways to the inner ear limit their utility at ...
Nathaniel T. Greene +4 more
openalex +2 more sources
The Journal of the Acoustical Society of America, 1962 The attenuation of two different earplugs and a helmet was measured by a procedure combining the free-field threshold shift and the Békésy threshold tracking methods. Subjects were then exposed to impulse noise which would produce between 12 and 64 dB TTS at 6000 cps unprotected and their TTS was subsequently measured after identical exposure during ...
J. Fletcher, M. Loeb
+4 more sources
Effects of Ear Protective Devices on the Intelligibility of Speech in Noise
The Journal of the Acoustical Society of America, 1946 Articulation tests were conducted to determine the intelligibility of speech in the presence of noise when listeners did not wear earplugs and when listeners wore earplugs (NDRC Ear Wardens). It was found that with a reverberating signal from a public-address system and in the presence of noise that raises the open-ear speech threshold by 60 db or more,
Karl D. Kryter
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Standard Specification for Face and Ear Protective Devices for Air Soft Sports
, 2021 F08 Committee
+5 more sources
Noise Attenuation of Ear-Protective Devices
Sound: Its Uses and Control, 1962 J. C. Webster, E. R. Rubin
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[Tests of Soviet-made "Beryushi" ear-protective devices].
Ceskoslovenska otolaryngologie, 1976 Rebecca Janisch
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High fidelity hearing protection devices: Attenuation in human ears and manikin devices
The Journal of the Acoustical Society of America, 2020Flatness of attenuation was measured for high-fidelity hearing protection devices (HPDs) using microphone-in-real-ear (MIRE) and behavioral real-ear-attenuation-at-threshold (REAT) protocols. In addition, participants completed the words-in-noise (WIN) test with and without HPDs, and provided subjective ratings of perceived sound quality via surveys ...
Colleen Le Prell, Tess Zaccardi
openaire +1 more source