Something analogue can be any value within a given range, and something digital can have multiple discrete and different levels, an analogue clock has hands which move around the centre and since it's analogue you can make it so that it displays certain numbers (10:30, 11:31, 5,03) and so on and it has infinite values.
A digital clock can do 10:30 and 10:30:51, which is more precise, but they have a finite number of values.
Sound is not only a wave, but it is an analogue, the amplitude, the volume, and the frequency we hear as pitch are all infinite possible combinations.
The first recording of sound was imprinted on a material, like a vinyl record, cassette tape, or a music box, which sound is imprinted on a surface or material.
But the thing about recording on such surfaces is that if you smudge a cassette tape, or scratch a vinyl record, that recording will deform the recorded sound waves and thus, cannot reproduce the sound that was recorded before the cassette, or vinyl damage.
Eventually, soundwaves were digitized, so how this was done the analog inputs were assigned numbers
2:28 14mins
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