Redirected from Shepard Tone
A
Shepard tone is a
sound consisting of a superposition of tones separated by
octaves. An
auditory illusion can be constructed by sweeping the frequency of a complex tone up an octave while passing the tone through a wide
bandpass filter. The tone appears to rise continuously in pitch, yet return to its starting note.
All Wikipedia text
is available under the
terms of the GNU Free Documentation License