Welcome to the group. It seems you experience Clairaudience (clear hearing) and when your guide(s) or spirit helper communicate with you, you hear them. You can meditate to find out who your guide is. Find a quiet place and if you like, soft music is okay too and just let your thoughts roll. After awhile and when your mind has cleared from your brain chatter, ask your guide their name. They don't care really if you call them by a name, but they do know it's easier sometimes for us to do so, so they will respond. It may take a little while before you get an answer, but meditate at the same time every day if you like and eventually things will become clearer as time goes on. Just be open to receiving an answer. If you like, you can develop the clairaudience to help you more. It all depends on how far you want to go with it. In time, everything gets better and more clear.
I find that when my spirit guide is near, I hear a high pitched ringing in my ears. Sometimes it is louder than others, and I can call on her and get answers. The other morning I woke up and it was really loud and I often have either premonition type dreams or I will wake up and see someone's spirit. It will usually be someone who is there to help in that specific situation- someone who has crossed over.