An instrument for measuring the level of sound pressure in DECIBELs. Such measurements are called sound level readings. See: SOUND LEVEL. Sound level meters usually ...

The remainder of March is listed as medium noise levels from .50-caliber weapons, rocket fire, and rotary cannons. The article New To The Area? Expect Rumbles From Joint Base All Weekend appeared ...

The major difference is that CNEL can be measured using ordinary dBA readings (see Sound Level Meter), as opposed to the computer calculation of Effective Perceived Noise Level used in the NEF. As ...

Unwanted background sounds are sometimes called noise. When the sound level of this noise rises to higher levels, we refer to this as noise pollution. Sound levels are measured on a scale known as ...