Why do sounds appear louder in the dark? Has anyone else noticed this?

Question

...with the lights out, it seems there is a slight echoing effect. My roommate and I both noticed it.

Answer 1

Well, when you think about it, one of your senses, Sight, would be cut off or at least impaired.  Hence it enhances your hearing slightly, making noises louder.

Answer 2

same with me

Answer 3

What if it is programmed into us? As a defense mechanism. Night brought creatures in days past, now we are used to seamingly advanced hearing. But I like the sharpening senses theory too.

Answer 4

i know what you mean, you can also feel this effect if you listen to a mp3 player during the night and you will notice you turn the volume down because it sounds louder.