A nearby helicopter can easily reach 105 dB-while most people are not near helicopters very often, 105 dB can also be produced by a large drum, which is a serious hazard for musicians. Most people do not have prolonged exposure to the sound of a subway train, but many face occupational noises that are equally as loud all day long.Ī lawnmower can be anywhere from 60 to 90 dB and are often in use for several hours. It can be helpful to use normal sounds you encounter every day as a rough scale for decibel levels:Īs you can tell from this brief scale, noises can reach unsafe levels rapidly. These numbers don’t mean much, however, if you don’t have a frame of reference for them. Any exposure to sounds over 140 dB is considered unsafe for humans, and continued exposure to noises over 85 dB also will put your hearing in danger. Test My Hearing with free Online Hearing Test How loud are everyday sounds – in decibels?Īs previously mentioned, 0 dB is the softest sound a human ear can hear-something almost inaudible, like a leaf falling. A sound that is 10 times more powerful is 10dB, a sound that is 1,000 times more powerful is 30 dB, and so on (it helps to count the zeroes in the scale to keep track!) The decibel scale is logarithmic, meaning it increases by the power of 10 each time. The decibel scale is incredibly large because ears are so sensitive to sound-people with normal hearing can hear anything from a light touch on skin to the roar of a plane’s engine. A decibel is a unit of intensity of sound, abbreviated dB. It is important to understand exactly what a decibel is.
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