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Spectrum sound illusion

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Uploaded by on Oct 11, 2007

Spectrum of the sound illusion
http://www.youtube.com/v/ugriWSmRxcM

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Howto & Style

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Standard YouTube License

  • likes, 5 dislikes

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This video is a response to Amazing AUDIO illusion
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All Comments (25)

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  • restart it :) it is cool

  • @NearbyHermit: Yeah there are plenty of better vids on it, although you'd be best to look it up elsewhere if you want to really know how it works.

  • @sutasman My keyboard failed me that day !

    I suppose you're right, but this video is bad .

  • @NearbyHermit: Uh no idea what you are on about, but its called a shepard tone and its not nearly as complicated as what you've tried to describe. Its simply a set of notes spaced one octave apart and increasing in pitch over several bars. The volume of the lowest and highest pitched notes is purposely made less, so you really hear the midtones, and not where the sequence repeats at the end.

  • @Hyduk87: Yeah thats a pretty good explanation. Its called a shepard tone if you are more interested.

  • @Pdi1983: Uh dunno what you're talking about but if your saying that the sound from the vid is false, then I can tell you its not. Its called a shepard tone. Many sites will tell you how it works, and if that fails then I can explain it to you.

  • i say what what in the butt

  • Which is why if you restart the video in the middle or so, you aren't focusing on the frequency to hear the higher pitch, causing you to believe that there is no illusion in place.

  • Of course you can transform on the fly. You may need to learn some more... :-) No offense.

  • When the video is repeated, the brain "desires" so much to hear the chromatic scale continue to climb that the base tones are suddenly "drowned out" and the harmonics (those frequencies at the higher levels) are what the brain then focuses on. Watch a spike climb upward. Then when it's repeated, look at where the spike ended... there's a smaller spike (a harmonic) that started there. You can continue to repeat the video and watch the spike climb until it is off the screen.

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