Editing Shepard tone (section)

===Shepard–Risset glissando===
[[Jean-Claude Risset]] subsequently created a version of the scale where the tones glide continuously, and it is appropriately called the '''continuous Risset scale''' or '''Shepard–Risset glissando'''.<ref name="CDM">{{Cite news|url=http://cdm.link/2016/11/jean-claude-risset-reimagined-digital-sound-europe-abroad/|title=Jean-Claude Risset, who reimagined digital synthesis, has died - CDM Create Digital Music|date=2016-11-22|work=CDM Create Digital Music|quote=The sound for which Risset is best known is perhaps the most emblematic of his contributions. Creating a sonic illusion much like M.C. Escher’s optical ones, the Shepherd-Risset glissando / Risset scale, in its present form invented by the French composer, seems to ascend forever.|access-date=2019-12-30|language=en-US}}</ref> When done correctly, the tone appears to rise (or fall) continuously in pitch, yet return to its starting note. Risset has also created a similar effect with rhythm in which tempo seems to increase or decrease endlessly.<ref>{{Cite web|date=12 May 2013|title=Risset rhythm - eternal accelerando|url=http://swiki.hfbk-hamburg.de:8888/MusicTechnology/826}}</ref>
[[File:Risset accelerando beat1 MCLD.ogg|thumb|An example of Risset's accelerating rhythm effect using a [[breakbeat]] loop]]