what property of sound is measured in decibels?

The property of sound that is measured in decibels is the loudness or sound intensity level. Decibels (dB) quantify the intensity or power of sound relative to a reference level, typically the threshold of human hearing. This measurement is logarithmic, meaning that an increase of 10 dB represents a tenfold increase in sound intensity, which corresponds to how loud the sound is perceived by the human ear.