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Some observations on the nature of the audiometric 4000 …
https://pubmed.ncbi.nlm.nih.gov/21419067/
Background: Pure-tone, air-conduction audiograms notched at 4000 Hz have long been considered the signature configuration for noise-induced hearing loss even though there is an extensive literature that does not mesh with this simple explanation. There are many reports of notched audiograms from individuals with no history of noise exposure and, conversely, …
Characteristics of the audiometric 4,000 Hz notch (744,553 ...
https://www.rehab.research.va.gov/jour/2013/501/pdf/page111.pdf
4,000 Hz and (2) at 3,000, 4,000, and/or 6,000 Hz. Bilateral audiograms from 1,000,001 veterans were obtained from Department of Veterans Affairs archives; after “cleaning” algo-rithms were applied, 744,553 participants (mean age = 63.5 yr) were included in the 4,000 Hz notch analysis (group 1) and 539,932 participants (mean age = 62.2 yr ...
Determinants of the Audiometric Notch at 4000 and 6000 …
https://pubmed.ncbi.nlm.nih.gov/32746483/
Background: Noise-induced hearing loss (NIHL) is often characterized by the presence of an audiometric notch at 3000-6000 Hz in a behavioral audiogram. The audiometric notch is widely used to investigate NIHL in children and young adults. However, the determinants of the audiometric notch in young adults largely remain unknown.
The Audiogram - ASHA
https://www.asha.org/public/hearing/Audiogram/
At the end of testing, the audiogram will show what you heard. Pitch or Frequency. Each line that runs from left to right shows a frequency in Hertz, or Hz. The lowest pitches are on the left side and the highest pitches are on the right side. The frequencies tested are 125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, 3000Hz, 4000 Hz, and 8000 Hz.
Understanding Your Audiogram | Johns Hopkins Medicine
https://www.hopkinsmedicine.org/health/conditions-and-diseases/hearing-loss/understanding-your-audiogram
Frequency or pitch is measured in Hertz (Hz). Frequencies range from low pitch to high pitch and read from left to right on the audiogram. Each vertical line represents a different frequency, such as 250, 500, 1000, 2000, 4000 and 8000 Hz. Intensity. The intensity is measured in decibels (dB). The intensity relates to how loud or soft a sound is.
How to Read an Audiogram and Determine Degrees of Hearing Loss
http://www.nationalhearingtest.org/wordpress/?p=786
Profound loss: 90 dB or more. The graph to the left represents a blank audiogram illustrates the degrees of hearing loss listed above. Frequency is plotted at the top of the graph, ranging from low frequencies (250 Hz) on the left to high frequencies (8000 Hz) on the right. Sound level, in dB, is plotted on the left side of the graph and ranges ...
UNDERSTANDING AN AUDIOGRAM
https://www.nationaldeafcenter.org/sites/default/files/Understanding%20an%20Audiogram.pdf
average (PTA) at 500, 1000, and 2000 Hz is commonly used, although some entities utilize higher frequencies (3000 and/or 4000 Hz) in order to encompass the higher frequency speech areas. The PTA (500, 1000, and 2000 Hz) calculated for the above audiogram is approximately 53 dB HL in each ear, a hearing loss in the moderate range.
What does 4000 Hz tell you about a child's hearing?
https://hearinghealthmatters.org/hearingandkids/2013/4000-hz-tell/
High Frequencies: 4000 Hz provides more information on consonant production, third formant for vowels, noise bursts for plosives and affricates, turbulent noise of voiced and unvoiced fricatives. 6000 Hz provides information required for perception of /s/, and 8000 Hz provides information on turbulent noise of all fricatives and affricates.
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