In the radio-frequency (RF) microwave test and measurement world, engineers often deal with the power measurement unit of dBm instead of wattage (W). However, when entering the audio measurement arena ...

Sheriff's deputies will take decibel readings when downtown residents complain about bar noise and compile a report for use in drafting a noise ordinance, Commissioner Cara Jennings said Wednesday.

Imagine walking through a field on a cloudless day when you suddenly hear the 130-decibel roar of a fighter jet. But you can’t spot the jet, or even tell which direction the sound is coming from.

NASA's X-59 supersonic-but-quiet jet airplane soared over the Southern California desert on Tuesday in the first test flight of an experimental aircraft designed to break the sound barrier without all ...