Series 106 and Series 116 hermetically sealed piezoelectric microphones measure low-level pressure, as well as acoustic and ultrasonic high-intensity sound pressure levels. The stainless-steel devices ...

According to the Occupational Safety and Health Administration, 22 million people—including nearly all power plant workers—are exposed to potentially damaging noise at work each year in the U.S.

For a room to feel pretty much silent to me, the sound pressure level needs to be around 20 dBA or below. Ambient traffic noise out the back in my little office/studio, with the door open, measures ...

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