- 1. Database (DB). Common abbreviation for database. The abbreviation may be applied to any form of database, and does not imply any specific type of database.
- 2. Decibel (dB). A standard logarithmic scale for measuring the loudness of
As a guide:
20-30 dB a whisper 60 dB typical conversation 70 dB busy traffic, vacuum cleaner 80 dB alarm clock 90 dB hair dryer 100 dB pneumatic drill
Exposure to 80 dB or above is considered dangerous to hearing and can damage hearing. The louder the sound the shorter the exposure required to damage hearing. Unfortunately hearing damage is permanent.
For more information see:
- www.jimprice.com/prosound/db.htm - Understanding dB.
- http://everything.explained.at/Decibel - Decibel (dB) Explained.
- www.dangerousdecibels.org/hearingloss.cfm - Dangerous decibels, about hearing loss. Article describes how hearing can be damaged by long term exposure to noise and gives an indication of noise levels hazardous to hearing.
- www.asha.org/public/hearing/disorders/noise.htm - Noise and Hearing loss.