The amazing speech-to-sound illusion:
First listen to Sound Demo 1. Your brain will interpret it as a melody. Then listen to Sound Demo 2. In the middle of the speech the speaker will appear to burst into a song!
To experience the illusion, play the two recordings in sequence
(demos by Diana Deutsch, UC San Diego).
The speech-to-song illusion reveals that the exact same sequence of sounds can seem either like speech or like music, depending only on whether it has been repeated.
more info: deutsch.ucsd.edu/pdf/Sci_Am-2010_Jul_Aug_36-43.pdf
next episode: Dutch Brazil