What is the difference between "audio" and "sound"?
Is it possible that a beeping noise could be considered one but not the other?
Audio is a more technical term, referring to sound coming from a recording, transmission or electronic device.
Sound is a more generic word and can be caused by any source.
So, if the beeping noise is coming from an electronic device, it could be considered audio, but usage is important. You would rarely refer to a specific, discrete noise as "audio". You could say:
Would be better. Or:
Or, depending on context, using audio as an adjective may be acceptable:
Audio is more generally considered to mean artificially generated sound specifically.
Noun audio (uncountable)
Noun sound (plural sounds)
It appears that the word 'audio' is used to specify a particular implementation of a sound, i.e. as in a digitally created sound, whereas 'sound' is the object itself.
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