https://mynoise.net/NoiseMachines/shepardAudioIllusionToneGenerator.php
Binaural Shepard Tone Generator — The Audio Illusion
Shepard Madness can be fun or uncomfortable, depending on the listener. Be aware of possible side effects like a faster heartbeat, headaches, dizziness, and...
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https://www.hearth-myth.com/search/label/Shepard%20tone
hearth/myth: Shepard tone
The blog of fantasy author Lynne Cantwell
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