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The range of sounds measured on the decibel scale is from 0 dB (the quietest sound) to 140 dB (the threshold of pain). Sounds above 85 dB are considered by specialized organizations like NIOSH (the US National Institute for Occupational Safety and Health) to be dangerous to human hearing.
In decibels, sound is expressed in (dB). A whisper is about 30 dB, regular talk is about 60 dB, and it is about 95 dB for a motorcycle engine to operate. Noise over 70 dB can start to affect your hearing for an extended period of time. Loud noise above 120 dB will damage your ears instantly.
Sounds at or below 70 dB are considered safe for your hearing. That’s the sound of a normal conversation between two people. Sounds at 80 or 85 dB will damage your hearing over time. And that’s the sound of heavy traffic—from inside a car.
Sound levels are most commonly measured in decibels (dB), which range from barely audible to loud enough to cause physical pain. The risk of hearing loss starts at around 70 dB. Exposure to sounds at 85-decibel levels and above damages your hearing.
To use this noise pollution calculator, enter the noise level in deceibels (dB) and it will automatically calculate the maximum amount of time for safe exposure. You should never expose yourself more than this displayed time to protect yourself from hearing loss.
This guide includes several noise level charts (dB level charts) which show the effect of sounds and noises at different decibel levels. Some of these charts also show the typical sounds which produce noise at different decibel levels.
What are decibel levels, and why are they so important? How can you measure them, and when are they too "loud"? Find out in this article with a chart included.
The decibel scale measures sound based on human hearing, which makes it one of the most unusual scientific measurements. How are decibel calculated and what do they tell us about sound?
The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel (B). It expresses the ratio of two values of a power or root-power quantity on a logarithmic scale. Two signals whose levels differ by one decibel have a power ratio of 10 1/10 (approximately 1.26) or root-power ratio of 10 1/20 (approximately 1.12). [1][2]
Decibel Level Comparison Chart Environmental Noise dBA Jet engine at 100’ 140 Pain Begins 125 Pneumatic chipper at ear 120 ... Walkman on 5/10 94 Level at which sustained exposure may result in hearing loss 80-90 City Traffic 85 Telephone dial tone 80 Chamber music, in a small auditorium 75-85 Vacuum cleaner 75 Normal conversation 60-70 ...