The first time I encountered this effect was when I was listening to this TED Talk "Michael Shermer: Why people believe weird things" https://www.youtube.com/wa

The first time I encountered this effect was when I was listening to this TED Talk "Michael Shermer: Why people believe weird things" https://www.youtube.com/watch?feature=player_detailpage&v=8T_jwq9ph8k#t=566 https://www.youtube.com/watch?feature=player_detailpage&v=8T... The whole thing is worth a listen ..but in the relevant clip he talks about audio illusions and gives a great example. This just reinforces the lesson, it is the Brain that is Hearing!