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Shepard Tones (was RE: Claude Voit's See What--Ipoulkapek--I Can Play It--I Can't Pronounce It)
At 05:07 PM 8/29/2003 -0700, Tim Nelson wrote:
>--- Relay <firstname.lastname@example.org> wrote:
> > this pattern (in Em Dorian, it's Root fifth min 3 four second flat
> > for your edification) moves up and up like an Escher painting!
>A different animal to be sure, but your description kinda reminds me of
>what some people call a 'barber pole': a delayed/looplayered rising or
>falling tone that never reaches its destination because as it fades away,
>it's beginning again (and in the middle of itself as well). Example of
>one: the end of Pink Floyd's 'Echoes' from 'Meddle'.
I think the proper term for those are 'Shepard Tones' -- named after the
perceptual scientist who discovered them, Roger N. Shepard. There's also
an excellent example of Shepard Tones used on the last track of Yellow
Magic Orchestra's album _BGM_, titled "Loom".
If you're interested in recreating them, do a quick Google search. It
came up with a few different tips on implementing Shepard Tones on a
variety of electronic instruments.
"i want to reach my hand into the dark and *feel* what reaches back"