loudness
nounEtymology From Middle English loudnesse, lowdenesse, from Old English hlūdnes, equivalent to loud + -ness.
› Strength of sound: how loud it is.
1
The perceptual strength or amplitude of sound pressure, measured in sones or phons.
2
The physical strength of the sound pressure level, measured in decibels.
- Derived terms
- loudness race, loudness war