A vessel may not be operated on Washington waters if, when measured from the shore, it produces a noise level over 75 decibels.
75
The decibel.
Decibel (dB) * The Bel is the primary unit. However, the scale is too large. So for human hearing, we use the deciBel, where each deciBel is 1/10 of a Bel. this is abbreviated dB.
Decibel is a measurement of loudness.
The loudness of the radio was measured at a high decibel level by the council authorities.
Weight is measured in kilos, liquid is measured in litres and sound is measured in decibels.
Sound is measured in decibels. A decibel is 10logPower Out/Power In.
A: Dbm or decibel of modulation
The loudness of sound is measured using the "decibel" or "bel" unit.
Sound is measured in decibels by a sound pressure level meter (SPL-meter).
The volume of a sound refers to how loud or soft it is. It is measured in decibels (dB), with higher decibel levels indicating louder sounds.
All I can think of that you might be asking is what is it measured in, and that would be the unit of the decibel (dB)