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How loud is too loud?
In order to be able to compare volume in different situations, noise levels are
expressed in decibels (dB). Note that an increase of 10 dB is perceived as a doubling
of the volume level.
The sound level in a room can be roughly estimated by how well we can understand people speaking.
For speakers 3 feet apart, the following rule of thumb applies:
- For noises up to 70 dB, it is possible to hold a conversation at normal volume.
- At 90 dB, it is possible to hear each other with voices raised.
- At 100 dB, it is only possible to hear each other when shouting loudly.
- From 105 dB onwards, it is no longer possible to understand anything.
*) The continous exceeding of this biocompatible limit can cause irreparable hearing loss in the long term.
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