Shepard-Risset audio illusions - TranceAddict Forums

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-- Shepard-Risset audio illusions

Posted by Looney4Clooney on Jun-23-2012 19:50:

Shepard-Risset audio illusions

I'm sure you've heard the never ending rise or fall tone but check out the rhythm one.

http://en.wikipedia.org/wiki/Jean-Claude_Risset

pretty neat. Now your build can last 10 minutes.

Posted by Lith on Jun-23-2012 20:29:

Now my beat-matching software is having an aneurysm. Anything under 45 minutes goes into my "secondary" bucket hahaha!

Posted by Teezdalien on Jun-23-2012 21:25:

lol. That sounds fucked up... but yeah pretty cool.

Posted by itsamemario on Jun-23-2012 21:56:

that was cool. man i gotta learn Csound.

Posted by mathieu on Jun-23-2012 22:46:

Posted by Lunar Phase 7 on Jun-23-2012 23:12:

Can you explain what the fuck is going on there?

The continuous pitch down drone they have ont hat I can hear loop (at least I think)

The breakbeat thing is just fucked up.

Posted by Beatflux on Jun-23-2012 23:16:

I wanted to use something like that for Rize...it would be really over the top.

Posted by Looney4Clooney on Jun-24-2012 00:11:

quote:
Originally posted by Lunar Phase 7
Can you explain what the fuck is going on there?

The continuous pitch down drone they have ont hat I can hear loop (at least I think)

The breakbeat thing is just fucked up.

the code is listed in the wiki thingy. Google Shepard tone for the continuous rise or drop. That is easy. 2 sine tones is all you need.

Posted by Kysora on Jun-24-2012 02:57:

..am I broken? it doesn't sound like it's getting faster to me.

it's this, right? It sounds like the beat is morphing but the downbeat's tempo never changes, I don't get it.

Posted by Looney4Clooney on Jun-24-2012 03:03:

tap your hand to it

it is getting faster.

It is the same principle as the shepard tone.

You speed up a loop and have the same loop at 0.5 the speed. As you increase the tempo, you slowly cross fade the two loops so that you eventually get back to the main tempo which is double the old but the original is quiet so you only hear the loop that was at 0.5

here just thru this together in 10 minutes. Its not perfect but you get the idea. I think you wyould have to spend more time on the cross fade to make it work right.
loop.mp3 - 375.0 Kb

Posted by wayfinder on Jun-24-2012 06:17:

this is already 4 years old, but i tried to make it more melodious than just a rise and a fall:

ftp://ftp.untergrund.net/users/wayf...%20way%20up.wav

set this to loop and be uplifted!

Posted by Lunar Phase 7 on Jun-24-2012 12:14:

Weird.

Posted by Haak on Jun-29-2012 13:57:

Haha, that beat drives me mad, waiting for the mmm drop.

Posted by pointPi on Jun-30-2012 08:22:

Neat technique that I can take advantage of. I have some ideas popping in my head already.

Posted by itsamemario on Jun-30-2012 15:50:

quote:
Originally posted by Haak
Haha, that beat drives me mad, waiting for the mmm drop.

We be gettin down and you know we're crush groovin