Sound power level

External Power

External sound stimulion

8-hour continuous equivalent sound level

8-hour equivalent sound level

Average equivalent sound level

dBA A-weighted sound level

Equivalent consecutive sound level A

equivalent continuous A sound level

ER-7C Sound Level Meter

power sound wave

sound level

sound level calibrator

sound level meter

Sound level metre

sound power

absolute power level

Acoustic power level

optical power level

power level