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2. Shepard tone - Wikipedia

   en.wikipedia.org/wiki/Shepard_tone

   A Shepard tone, named after Roger Shepard, is a sound consisting of a superposition of sine waves separated by octaves. When played with the bass pitch of the tone moving upward or downward, it is referred to as the Shepard scale .

3. Tritone paradox - Wikipedia

   en.wikipedia.org/wiki/Tritone_paradox

   Each Shepard tone consists of a set of octave-related sinusoids, whose amplitudes are scaled by a fixed bell-shaped spectral envelope based on a log frequency scale. For example, one tone might consist of a sinusoid at 440 Hz, accompanied by sinusoid at the higher octaves (880 Hz, 1760 Hz, etc.) and lower octaves (220 Hz, 110 Hz, etc.).

4. File:Shepard Tone spectrum video visualization.webm

   en.wikipedia.org/wiki/File:Shepard_Tone_spectrum...

   You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

5. Talk:Shepard tone - Wikipedia

   en.wikipedia.org/wiki/Talk:Shepard_tone

   The Risset tone, or barberpole effect, is continuous, and is a lot harder to generate because the separate octaves have to be in phase and their amplitude envelopes need to be logrithmic in order for the effect to work perfectly and for the listener not to hear separations in the tone. The psychoacoustic effect of the continuous tone, when done ...

6. Dunkirk (soundtrack) - Wikipedia

   en.wikipedia.org/wiki/Dunkirk_(soundtrack)

   Justine Conry said that Dunkirk has an "anxiety-inducing score" rather than the emotional, incredible, dramatic and heroic scores, with the use of Shepard tone. He wrote: "Zimmer, to a greater effect, uses the sound of ticking clocks for the “Shepherd tone.”

7. Flanging - Wikipedia

   en.wikipedia.org/wiki/Flanging

   Also known as "infinite flanging", this sonic illusion is similar to the Shepard tone effect, and is equivalent to an auditory "barber pole". [23] [24] The sweep of the flanged sound seems to move in only one direction ("up" or "down") infinitely, instead of sweeping back-and-forth. While Shepard tones are created by generating a cascade of ...

8. Glissando illusion - Wikipedia

   en.wikipedia.org/wiki/Glissando_illusion

   The glissando illusion is an auditory illusion, created when a sound with a fixed pitch, such as a synthesized oboe tone, is played together with a sine wave gliding up and down in pitch, and they are both switched back and forth between stereo loudspeakers. The effect is that the oboe is heard as switching between loudspeakers while the sine ...

9. Illusory continuity of tones - Wikipedia

   en.wikipedia.org/wiki/Illusory_continuity_of_tones

   An ascending tone is interrupted by a noise burst, but is perceptually continuous. Example of illusory continuity stimulus: discontinuous rising tone. The tone sounds continuous to some listeners. The illusory continuity of tones is the auditory illusion caused when a tone is interrupted for a short time, during which a narrow band of noise is ...