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Audiometric Notches in Noise-Induced Hearing Loss: 4K ...
https://www.researchgate.net/publication/272157998_Audiometric_Notches_in_Noise-Induced_Hearing_Loss_4K_versus_6K_as_Related_to_Body_Mass_Index#:~:text=A%20notch%20at%204%20kHz%20%284K%20notch%29%20in,c%20of%20noise-%20induced%20hea%20ring%20loss%20%28NIHL%29.
4K notch - Everything2.com
https://everything2.com/title/4K+notch
One feature of the 4K notch is that it is most often caused by broadband noise, such as large machinery or firing a gun (interestingly, audiologists can often identify hunters from their audiograms because they are 1. young men with 2. a 4K notch 3. that is more severe in one ear than the other).
Audiometric notching at 4 kHz: Good screening test for ...
https://www.indianjotol.org/article.asp?issn=0971-7749;year=2015;volume=21;issue=4;spage=270;epage=273;aulast=Agarwal
Another explanation for the notch at 4 kHz is that external auditory canal (EAC) of the ear is a tube that is, closed at one end by the tympanic membrane. The acoustic resonance properties of the EAC can be described in the equation of a tube closed at one end or: Where, f = resonant frequency v = velocity of sound l = length of tube (EAC).
Audiometric Notches in Noise-Induced Hearing Loss: 4K ...
https://www.researchgate.net/publication/272157998_Audiometric_Notches_in_Noise-Induced_Hearing_Loss_4K_versus_6K_as_Related_to_Body_Mass_Index
BMIs of subjects with left-ear audiograms with notches at 4K and 6K were 25.66±3.23 and 25.09±3.30, respectively; the difference was statistically significant (t-test; p=0.022).
Audiometric Notches in Noise-Induced Hearing Loss: 4K ...
https://www.researchgate.net/publication/260639832_Audiometric_Notches_in_Noise-Induced_Hearing_Loss_4K_versus_6K_as_Related_to_Body_Mass_Index
Among those examined, 9,463 audiograms were acceptable for evaluation to determine the severity of NIHL at 4K Hz. The mean hearing threshold at 4K …
What Does a Notch in Hearing at 4 kHz Indicate? | …
https://www.tinnitustalk.com/threads/what-does-a-notch-in-hearing-at-4-khz-indicate.34279/
NIHL, ETD and work stress. That is true, a notch at 4kHz is indicative of noise induced hearing loss, just like with me. One of the audiologists said that this because we naturally amplify noises in this range with our ears because of evolution - when we are babies, it makes it easier for us to hear our mothers.
Five Myths in Assessing the Effects of Noise on Hearing ...
https://www.audiologyonline.com/articles/five-myths-in-assessing-effects-1292
A notch at 4 kHz is called a ''noise notch'' and it means that the hearing loss was caused or …
Audiogram notches in noise-exposed workers
https://pubmed.ncbi.nlm.nih.gov/17086083/
Despite this variability, a notch metric showed excellent agreement with expert notch consensus in each sample (94.7 and 96.6%; kappa = 0.88 and 0.92). Conclusions: Audiogram notch metrics can agree with expert clinical consensus and assist in the surveillance of noise-exposed workers.
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