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Related Concept Videos

Sound Intensity Level00:53

Sound Intensity Level

Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and hence a...
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Perceiving Loudness, Pitch, and Location01:21

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Sound Waves: Interference

Sound waves can be modeled either as longitudinal waves, wherein the molecules of the medium oscillate around an equilibrium position, or as pressure waves. When two identical waves from the same source superimpose on each other, the combination of two crests or two troughs results in amplitude reinforcement known as constructive interference. If two identical waves, that are initially in phase, become out of phase because of different path lengths, the combination of crests with troughs...

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Related Experiment Video

Updated: May 18, 2026

Modified Experimental Conditions for Noise-Induced Hearing Loss in Mice and Assessment of Hearing Function and Outer Hair Cell Damage
07:13

Modified Experimental Conditions for Noise-Induced Hearing Loss in Mice and Assessment of Hearing Function and Outer Hair Cell Damage

Published on: February 10, 2023

Occupational noise-induced hearing loss.

M H Azizi1

  • 1Academy of Medical Sciences of the IR Iran, Tehran, Iran. azizi@ams.ac.ir

The International Journal of Occupational and Environmental Medicine
|October 2, 2012
PubMed
Summary
This summary is machine-generated.

Occupational noise-induced hearing loss (NIHL) is common and incurable in adults. Prevention focuses on controlling workplace noise and regular hearing tests for exposed workers.

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Area of Science:

  • Otolaryngology
  • Occupational Health
  • Audiology

Background:

  • Noise-induced hearing loss (NIHL) is a prevalent occupational hazard.
  • Work-related noise exposure is the primary cause of NIHL in adults.
  • Currently, NIHL is considered an incurable condition.

Purpose of the Study:

  • To review occupational NIHL.
  • To summarize prevention strategies for workplace noise exposure.
  • To highlight the importance of audiologic evaluation.

Main Methods:

  • Literature review of PubMed data up to early 2010.
  • Focus on occupational NIHL.
  • Synthesis of existing knowledge on prevention and management.

Main Results:

  • Occupational noise is the most common cause of adult NIHL.
  • Effective prevention involves identifying noise sources and implementing controls.
  • Periodic audiologic evaluation is crucial for monitoring workers.

Conclusions:

  • NIHL is a significant work-related health issue.
  • Maximal protection through noise control and monitoring is essential.
  • Early detection and prevention are key to managing occupational hearing loss.