Isn't it possible you heard your parents when you were dreaming? I have had many dreams where things that were surrounding me as sound influenced the dream such as sound, voices, the morning breeze. My brother talked in his dream when he was younger, and I could actually steer it a bit, not to much. But for example when I said "What did you say?" he would infact repeat himself.
What I've also experienced quite some times is the illusion of movement and touch in dreams. For example a dream I had a lot is that I fell down some stairs and at the moment of impact I wake up but it feels like I fell into my bed.
