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ajuc 2 days ago

> -3db is half loudness, +3dB is double

It isn't tho. It's close but not exactly. And there's nothing about -3 behing half that makes sense except for familiarity (and it's not even wide-spread familiarity - most people wouldn't know how much louder +3dB is).

It's just an unnecesarilly confusing definition that stuck for historic reasons.

danadam 2 days ago | parent [-]

> It isn't tho. It's close but not exactly.

It isn't tho :-). It's not close to double loudness. It's double power, which is 1.41 higher sound pressure, which is only slightly louder.