'sound-based' originates from the combination of 'sound' and 'based', where 'sound' refers to auditory sensations and 'based' indicates foundation or reliance.

'Sound' and 'based' have been used in English since the Middle Ages, with 'sound' deriving from Old English 'sund' and 'based' from Old French 'basse'.

Initially, 'sound' referred to any auditory sensation, and 'based' meant foundation. Together, they now refer to systems or methods relying on sound.