A time slip (also called a timeslip) is a phenomenon in which a person, or group of people, travel through time via unknown means...
Many time slip witnesses report that, at the start of their experience of the phenomena, their immediate surroundings take on an oddly flat, underlit and lifeless appearance, and normal sounds seem muffled. This is sometimes accompanied by feelings of depression and unease.
Now.. lie back, and listen to some sounds that could typically accompany such a phenomenon.. But be careful..