Shepard Scale
4.0star
25 reviews
1K+
Downloads
Everyone
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About this app
The Shepard Scale is a series of tones that appear to go up indefinitely. It is also sometimes called an "auditory illusion" or a "sonic barber’s pole". This application allows you to play a Shepard Scale so you can experience the effect for yourself.
This effect was first described by Roger Shepard in 1964. Each "tone" in the scale actually spans several octaves, and the ear is fooled because it notices the increasing base frequency, but doesn’t notice that the lower octave harmonics are becoming louder. The same twelve tones are repeated over and over, but each tone sounds higher in context than the previous one did.
This effect was first described by Roger Shepard in 1964. Each "tone" in the scale actually spans several octaves, and the ear is fooled because it notices the increasing base frequency, but doesn’t notice that the lower octave harmonics are becoming louder. The same twelve tones are repeated over and over, but each tone sounds higher in context than the previous one did.
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Ratings and reviews
3.7
21 reviews
Ivy
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January 1, 2021
Nice but it should keep playing when screen is off.
Travis Westerman
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January 21, 2022
It was annoying
Wingurdium Leviosa
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December 5, 2021
It does what is says
1 person found this review helpful
What’s new
Updates to support newer Android versions
App support
About the developer
Brant David Thomsen
thomsensolutionsllc@gmail.com
United States