Comments on: Audio “Optical” Illusions

By: David

David — Mon, 14 Nov 2011 22:56:31 +0000

first one uses multiple notes, second one uses octave fading to make it rise, and the third one changes rhythm. FAIL!

By: SavageMane

SavageMane — Sun, 25 Sep 2011 08:11:13 +0000

I dont know about you guys, but i could tell with all of them. I guess its just different for different people.

By: Cindy Weaver

Cindy Weaver — Fri, 19 Nov 2010 13:19:43 +0000

This is the coolest site! Love the audio illusions. The “bells” sound like what happens when I change a string on my guitar and start tuning it. Interesting stuff.

By: michel

michel — Sat, 28 Aug 2010 07:41:36 +0000

To enjoy fully shepards use this player http://alpha2player.com and set loop song and speed to 2x, amazing !

By: eagle198

eagle198 — Tue, 13 Jul 2010 16:34:05 +0000

Sorry it looked better than that before but the website messed it up

By: Someone

Someone — Tue, 18 May 2010 09:27:03 +0000

The drum is the easiest to “decode”. i followed at the waves on the screen and i realized the only thing changing is the rhythm.

By: Ari

Ari — Wed, 14 Apr 2010 01:01:13 +0000

Wow I like these audio illusions. It’s even POSSIBLE for me to figure out the starting pitch!

By: andy

andy — Tue, 11 Aug 2009 20:01:10 +0000

its basically the destiny of the money we put in our banks: as soon as it’s earned it gets spoiled in fake bonds …so the work must be done all over again…..

By: kimmy

kimmy — Sun, 05 Jul 2009 12:52:12 +0000

once you have listened to the first one play it again an it sounds like its going up even more

By: Mark

Mark — Thu, 21 May 2009 01:53:58 +0000

the drum one is easy, its not changing timing, its just changing rhythm so it sounds like it is speeding up

By: Anonymous

Anonymous — Thu, 08 Jan 2009 04:44:00 +0000

The third one works by emphasizing certain beats. As it progresses the emphases are on more frequent beats.

By: r

Sat, 13 Dec 2008 03:18:00 +0000

I can’t download any audio from this site, so i am unable to see the hear the file that is inaudible to anyone over 20, and this one, and any other ones, is there any other way to download it?

By: Anonymous

Anonymous — Tue, 02 Sep 2008 03:39:00 +0000

the third one definitely gets faster. the drum beat has other beats subdividing it, and at the end it speeds up to twice the original speed, but the beat is somehow set up to sound the same as the starting beet. if you keep looping it, it sounds like it keeps getting faster (which it does) but if you try really hard to hear the slower beat you can do it.
kinda hard to explain… if you don’t understand me them I’m sorry =\
incorrect description, but a good illusion nonetheless

~KXD319

By: Anonymous

Anonymous — Mon, 02 Jun 2008 01:04:00 +0000

the third one clearly gets faster. listen to the end tempo then listen to the beginning again than the end again.

By: Anonymous

Anonymous — Thu, 19 Apr 2007 23:37:00 +0000

Interesting, but the illusion only works if you have the mp3 on repeat, and you focus on only one scale (the highest note going up or the lowest note going up). If you focus on a different note on the repeat, or if you alternate notes during, the illusion fails.