Can you have an audio illusion - somehow when I say illusion I associate that with seeing things. But the dictionary says that it means an erroneous mental representation.
And there have been a lot of them doing the rounds of the web lately.
In terms of optical illusions there was this great illusion showing the break of a curveball.
And now via Presurfer is an amazing audio illusion. Listen to it and then hit replay and listen to it again.
It will sound like the scale continues to rise, but it doesnt't. Weird.