Calibration ensures precision by aligning the sound level meter which has a known reference source, with calibration checks verifying accuracy without changes. Periodic tests within an accredited lab is suggested. “Kind” would be the more mature time period for classification but remains greatly used by sound level meter manufactures. What's https://aidenmarkramfamily44208.diowebhost.com/87457191/5-essential-elements-for-noise-level-measurement-instrument