thirst4kim wrote: my husband enhanced the sound it was in the middle of the night while we were sleeping
Here is what I would suggest. Take multiple recording devices (old tape recorders, whatever you have) in various rooms of the house. That way you can triangulate the source of the sound.
As I said before it sounds like part of a TV announcement, if it is paranormal in origin its possible something may have briefly turned the TV on for a moment. Or a radio.
Once you can localize the room its coming from, it may be time to set up a camcorder overnight.