Whether or not we hear the voice of God speaking does not depend on the health and physical accuracy of our physical ears. Rather we must have the "ears to hear" of which Jesus spoke more than once [e.g. Matt 11:15]. Thousands of people heard Jesus with their physical ears, but probably most of those did not have the "ears to hear" of which he spoke.
Therefore speak I to them in parables: because they seeing see not; and hearing they hear not, neither do they understand.
And in them is fulfilled the prophecy of Esaias, which saith, By hearing ye shall hear, and shall not understand; and seeing ye shall see, and shall not perceive:
For this people's heart is waxed gross, and their ears are dull of hearing, and their eyes they have closed; lest at any time they should see with their eyes, and hear with their ears, and should understand with their heart, and should be converted, and I should heal them.
But blessed are your eyes, for they see: and your ears, for they hear."
Matt 13:13-16
Whether or not we [you and I on this forum] are included in verse 16 is another question, isn't it?
Give God the glory!