Volume can mean loudness, for example, in the volume control on computers and televisions which lets you tell the unit how loud you want its sound to be. Loudness is measured in Decibels (Db) and can be measured using a "Decibel Meter" or "sound level meter".

Other Languages
العربية: جهارة
català: Volum (so)
Deutsch: Lautheit
eesti: Helivaljus
English: Loudness
français: Sonie
hrvatski: Glasnoća
magyar: Hangosság
Nederlands: Luidheid
日本語: 音の大きさ
norsk nynorsk: Lydstyrke
polski: Głośność
português: Volume (som)
українська: Гучність звуку
中文: 響度