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The effects of noise on hearing vary among people. Some people's ears are more sensitive to loud sounds, especially at certain frequencies. (Frequency means how low or high a tone is.) But any sound that is loud enough and lasts long enough can damage hearing and lead to hearing loss.
A sound's loudness is measured in decibels (dB). Normal conversation is about 60 dB, a lawn mower is about 90 dB, and a loud rock concert is about 120 dB. In general, sounds above 85 are harmful, depending on how long and how often you are exposed to them and whether you wear hearing protection, such as earplugs or earmuffs.
Following is a table of the decibel level of a number of sounds.
Average decibels (dB)
Leaves rustling, soft music, whisper
Average home noise
Normal conversation, background music
Office noise, inside car at 60 mph
Vacuum cleaner, average radio
Heavy traffic, window air conditioner, noisy restaurant, power lawn mower
80–89 (sounds above 85 dB are harmful)
Subway, shouted conversation
Boom box, ATV, motorcycle
Chainsaw, leaf blower, snowmobile
Sports crowd, rock concert, loud symphony
Stock car races
Gun shot, siren at 100 feet
As loudness increases, the amount of time you can hear the sound before damage occurs decreases. Hearing protectors reduce the loudness of sound reaching the ears, making it possible to listen to louder sounds for a longer time.
An easy way to become aware of potentially harmful noise is to pay attention to warning signs that a sound might be damaging to your hearing. A sound may be harmful if:
Most cases of noise-induced hearing loss are caused by repeated exposure to moderate levels of noise over many years, not by a few cases of very loud noise. Wearing hearing protectors can help prevent damage from both moderate and loud noise.
If your workplace has harmful noise levels, plan ahead and wear hearing protection. People who may be regularly exposed to harmful noise because of their jobs include:
Current as of:
April 15, 2020
Author: Healthwise StaffMedical Review: William H. Blahd Jr. MD, FACEP - Emergency MedicineKathleen Romito MD - Family MedicineCharles M. Myer III MD - Otolaryngology
Current as of: April 15, 2020
William H. Blahd Jr. MD, FACEP - Emergency Medicine & Kathleen Romito MD - Family Medicine & Charles M. Myer III MD - Otolaryngology
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