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Sound level meter

Measuring instrument
A sound level meter is used for acoustic measurements. It is commonly a hand-held instrument with a microphone. The best type of microphone for sound level meters is the condenser microphone, which combines precision with stability and... Wikipedia
Description: Label
Level A-weighted equivalent: LAeq
Level A-weighted fast maximum: LAFmax
Level C-weighted slow minimum: LCSmin
Level Z-weighted impulse maximum: LZImax