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File:DescenteInfinie.ogg

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DescenteInfinie.ogg (Ogg Vorbis sound file, length 1 min 6 s, 42 kbps, file size: 336 KB)

Summary

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Description
English: This is a Shepard–Risset glissando. I programmed this acoustic illusion in Java one year ago. Unfortunately, the source code is lost today because of a computer crash, but the equation is below.
Español: Este sonido es un Shepard-Risset glissando. Programé esta ilusión acústica hace un año en Java. Desafortunadamente, el código se perdió al estropeárseme el ordenador pero la ecuación está abajo.
Français : Ceci est un glissando de Shepard-Risset. J'ai programmé cette illusion acoustique en Java il y a un an. Le code source est malheureusement perdu (crash de mon ordinateur), mais l'équation est présentée ci-dessous.
Date
Source Own work
Author
This illustration was made by Gloumouth1.

Please credit this: Gloumouth1, Creative Commons Attribution-Share Alike

An email to gloumouth1 at gmail.com would be appreciated too.

I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
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. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This licensing tag was added to this file as part of the GFDL licensing update.
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic license.
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. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
You may select the license of your choice.

Wikipedia

Wikipedia
 This is a featured sound on the English language Wikipedia (Featured sounds) and is considered one of the finest sound files. See its nomination here.

If you think this file should be featured on Wikimedia Commons as well, feel free to nominate it.
If you have an image of similar quality that can be published under a suitable copyright license, be sure to upload it, tag it, and nominate it.

Equation

T-periodic on

with

The same signal is added on a minor chord, on several octaves.

--Gloumouth1 01:39, 10 December 2005 (UTC)

Loop

If you want to have a loop, as T = 20 s, you can crop this sound exactly from 18 s to 38 s.

Another idea

If I (or you) have time, one day, another function which could be programmed and recorded...

with

--Gloumouth1 17:04, 5 March 2007 (UTC)

en:File:DescenteInfinie.ogg

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depicts

9 December 2005

application/ogg

File history

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Date/TimeThumbnailDimensionsUserComment
current21:40, 9 December 20051 min 6 s (336 KB)Gloumouth1en:Shepard tone I programmed it in en:Java one year ago. --Gloumouth1 Category:Synthetic sound

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