How does Adam and Eve hear Gods voice?

(username: Octianaluz) I'm not sure, there could be a few ways that they could of heard Gods voice, one way could be through the natural way (our ears). Another way could be from their spirit (a feeling you get deep down inside that something is telling you to do or not to do something), and another way can be from an answered prayer that comes from something that they'er familiar with on getting answers by (example: if they prayed for fruit, God would bless them by having fresh fruit grow from the trees, if they prayed for it to rain, then it would start raining on a sunny day, or them praying for help to overcome a bad habit and God helping them by weakening their strong urge for something that's not good and them noticing it through time, etc.) These are just some examples as you already know, but however they was able to hear from God, is probably the same way we can hear him, whichever way that may be.

God spoke so they could hear Him.