Shepard tone
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 Figure 1: Shepard tones forming a Shepard scale, illustrated in a sequencer |
A Shepard tone, named after Roger Shepard, is a sound consisting of a superposition of sine waves separated by octaves. When played with the base pitch of the tone moving upward or downward, it is referred to as the Shepard scale. This creates the auditory illusion of a tone that continually ascends or descends in pitch, yet which ultimately seems to get no higher or lower. It has been described as a "sonic barber's pole".
- See also: Wikipedia
- Related: Pitch circularity, Strange loop, Flanging, Wave interference, Phasing, Phaser (effect), Chorus effect
| The partials of a Shepard tone The partials of a Shepard tone crca.ucsd.edu/~syadegar/MasterThesis/node35.html - Web |
| BBC science show, Bang Goes the Theory, explains t... BBC science show, Bang Goes the Theory, explains the Shepard Tone www.bbc.co.uk/programmes/p00gfdg1 - Web |
| Demonstrating an audio example of a continuous "en... Demonstrating an audio example of a continuous "endlessly descending" tone www.crowncity.net/ratcave/Audio/Audio.html - Web |
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| Demonstration of discrete Shepard tone (requires M... Demonstration of discrete Shepard tone (requires Macromedia Shockwave) www.exploratorium.edu/exhibits/highest_note/ex.about.fr.html - Web |
| Visualization of the Shepard Effect using Java Visualization of the Shepard Effect using Java www.netalive.org/tinkering/shepard-effect/ - Web |
| The Shepard Tone from Wikipedia in easier to acces... The Shepard Tone from Wikipedia in easier to access format www.youtube.com/watch?v=DfJa3IC1txI - Web |
| A demonstration of a rising Shepard Scale as a bal... A demonstration of a rising Shepard Scale as a ball bounces endlessly up a Penrose staircase www.youtube.com/watch?v=PCs1lckF5vI - Web |
