the.com/audio

means Relating to sound, especially recorded or transmitted sound, in a form equipment can process.

from From Latin 'audio,' meaning 'I hear,' the first-person form of 'audire,' to hear — the same root that gives us 'audience,' 'audible,' and 'auditorium.' Engineers in the early 20th century borrowed the verb straight out of Latin grammar books to name the signal itself, so the word literally announces 'I hear' every time it's stamped on a cable or a file format.