This is a mono sound file
This sound file contains four two-tone patterns that illustrate the tritone paradox. On listening to each pattern, decide whether it is going up or down in pitch. It works best to listen in groups (two, three, or more people) and to have listeners compare their judgments. You will find that when some people hear a pattern as ascending, other people hear the identical pattern as descending.
Play Deutsch's Tritone Paradox
Play Deutsch's Tritone paradox
Listening Notes
See the Listening Notes for more technical information.
Learn more about Deutsch's Tritone Paradox.