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A normal conversation is about 70 decibels (dB). A gun firing off is about 140 dB.
The usual symbol for decibels is dB.
An SPLOIUYTR machine measures decibels.
•Sound can be measured in many ways such as decibels. There is a special machine which you can by that measures how many decibels something makes. A pin makes 10 decibels where as a loud persons or a stereo can make up to 80 decibels. Volume is measured in decibels. So Frequency is measured in hertz
eqivalent