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 ...

Given the nature of their network, the early telephone pioneers’ efforts at sound level metering were based on line losses over a “standard mile” of cable. Meters calibrated to this standard ...

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 ...

A team of Boston Globe reporters brought a noise level meter to some of the T’s most infamously screechy stops. Here's what they found.