Decibels are also used to measure the power of electrical signals. This article pertains to the measurement of sound. A decibel, designated by the letters dB, is a logarithmic scale of loudness.

Today, I’m going to walk you through everything you need to know about loudness, from explaining decibels ... how the scale ...

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 ...

Sound levels are measured on a scale known as the decibel \(dB\) scale ... Exposure to a brief sound level of 140 decibels will cause pain and can cause permanent damage to hearing.