Microbuzzer.com · Posted on 08-08-2010 by microbuzzer

The definition of the decibel value of the buzzer

DB (decibel) is mainly used for measuring short dB decibel sounds, commonly used dB that is the sound pressure level of the size of the unit.

sound pressure per doubling of sound pressure increase of 6 dB magnitude. “Sub” means one-tenth digit is a “shell”, but generally only use dB.

0 db in the standard setting is based on people with normal hearing can hear the smallest sound determined.
In general, the greater the number of decibels the sound represented by the larger, the calculation is per decibel increase of 10 decibels, the sound is the original size of about ten times. That is, 20 dB 10 dB sound power is the power of ten times, 30 dB, 20 dB sound power is ten times the sound power rate, and so on. 100 dB is equivalent to the voice of the train, 120 dB is equivalent to the aircraft cited pounding.

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