Noise level is the amplitude level noise which is a meaningless sound of greater than usual volume, with irregular vibrations, complex sound waves and no definite pitch.
Both the amount of noise and the length of time you are exposed to the noise determine its ability to damage your hearing. Noise levels are measured in decibels (dB). A higher number indicates a higher level of noise. This number is different from the noise reduction rating, which measures the amount of noise that is eliminated by particular hearing protectors. Below are some common examples of the noise level ratings.
|Whisper, Quiet Library||30 dB|
|Quiet room||40 dB|
|Moderate Rainfall||50 dB|
|Conversation, Dishwasher||60 dB|
|Vacuum Cleaner||70 dB|
|Alarm Clock, Busy Street||80 dB|
|Lawnmower, Shop Tools, Truck Traffic, Subway||90 dB|
|Snowmobile, Chain saw, Pneumatic Drill||100 dB|
|Machinery, Model Airplanes||110 dB|
|Car Stereo, Band Practice||115 dB|
|Jet Plane Take-off, Amplified Music at 4-6 ft.||120 dB|
|Firearms, Air-Raid Siren, Jet Engine||140 dB|
|Rock Concerts at Peak||150 dB|
| border=“1” |————-+———————————— ! colspan=“2” | Noise levels considered to be faint | Whisper, Quiet Library | 30 dB ! colspan=“2” | Noise levels considered to be moderately loud |- | Quiet room | 40 dB | Moderate Rainfall | 50 dB ! colspan=“2” | Noise levels considered to be very loud |- | Conversation, Dishwasher | 60 dB |- | Vacuum Cleaner | 70 dB |- | Alarm Clock, Busy Street | 80 dB |- ! colspan=“2” | Noise levels considered to be extremely loud |- | Lawnmower, Shop Tools, Truck Traffic, Subway | 90 dB |- | Snowmobile, Chain saw, Pneumatic Drill | 100 dB |- | Machinery, Model Airplanes | 110 dB |- ! colspan=“2” | Noise levels considered to be painful |- | Jet Plane Take-off, Amplified Music at 4-6 ft., Car Stereo, Band Practice | 120 dB |- | Jackhammer | 130 dB |- | Firearms, Air-Raid Siren, Jet Engine | 140 dB |- | Rock Concerts at Peak | 150 dB |-
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