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Loud sounds (including music) can have a serious effect on your hearing. Please turn your audio system down to avoid damaging your hearing. To give you an idea of different sound intensities, here is a chart. Keep in mind that some car audio systems may be quite a bit louder than 140db. Personally mine will do around 153db, but I wear hearing protection when getting it tested. BE CAREFUL!! You only get 1 set of ears!!!
Sound Warning and Sound Pressure Levels
SPL (Sound pressure level): a measuring of sound intensity in decibels (dbs).
|
Decibels |
Degree |
Loudness or Feeling |
|
225 140 130
120
110 |
Deafening |
12” Cannon @ 12ft front & below. Jet Aircraft Artillery Fire Threshold of Pain.. >130 causes immediate hearing damage. Hydraulic press, jackhammer Thunder, diesel engine room Close to train, ball mill |
|
100
90 |
Very Loud |
Boiler Factory, lawn mower, car horn @ 5 meters, wood saw Symphony or band, noisy factory, truck w/o muffler. >90db regularly can cause ear damage |
|
80
70 |
Loud |
Electric shaver, alarm clock, noisy office, police whistle Average radio, normal street noise |
|
60 50 45 |
Moderate |
Normal conversation close up Normal office noise, quiet stream To awaken a sleeping person. |
Sound intensities are typically measured in decibels (db). A decibel is defined as 10 times the logarithm of the power ratio (power ratio is the ratio of the intensity of the sount to the intensity of an arbitrary standard point.) Normally a change in 1db is the smallest volume change detectable by the human ear.
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