We hear many sounds of a clairaudient type during the transition period between wakefulness and sleep. Whatever happens, do not fear, nor become identified!
Experiences tend to be symbolic. Perhaps your inner God is “ringing the front door” because He wants you to let Him in!
Keep your mindfulness, watch, listen, and wait to see what happens next...
For thirty years I sought God. But when I looked carefully I found that in reality God was the seeker and I the sought. -Bayazid al-Bastami