This discussion begins with the creation of sound itself. Everything in nature that creates a sound creates an analog sound, which also happens to be the only kind of sound that we can hear. And don’t forget the importance of air because without air we have no sound. It is the air pressure pulses in the form of vibrations that allow our ears to hear sound.
Only in a studio using digital sound synthesis being directly recorded into a digital recorder is a digital sound actually created(but not heard). Even then you cannot actually hear it until it is converted to an analog sound and reproduced via a speaker.