Sound level meter
A sound level meter (also called sound pressure level meter) is used for acoustic measurements. It is commonly a hand-held instrument with a microphone.
A sound level meter (also called sound pressure level meter) is used for acoustic measurements. It is commonly a hand-held instrument with a microphone.
A sound level meter (also called sound pressure level meter) is used for acoustic measurements. It is commonly a hand-held instrument with a microphone.
Source: Wikipedia "Sound level meter" · CC BY-SA 4.0
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