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Re: Shepard tone



A big western howdy,

 I once ran sound for a country/western band. At one
point the girl singer would hold a high note for some
time. I would be ready with my ibanez fine delay
control full up. When she hit the note, i'd send it to
the delay and slowly turn the knob down(longer delay
time). It also sounded like it'd never stop. Until i
got to the end of the control knob range of course.
Rig

--- tEd  KiLLiAn <tedkillian@charter.net> wrote:

> Hi all,
> 
> I've also heard it referred to as a "barber poll"
> tone.
> 
> I suppose it applies whether it is ascending or
> descending.
> 
> James Tenney created an electronic composition at
> Bell Labs in the 
> early 1960s that was essentially just this sort of
> thing.
> 
> I have a recording of it somewhere.
> 
> Cheers,
> 
> Ted
> 
> On Nov 6, 2007, at 1:47 PM, Per Boysen wrote:
> 
> > On 6 nov 2007, at 21.36, Daryl Shawn wrote:
> >
> >> "Shepard tone"
> >
> >
> > Very interesting! At
> http://en.wikipedia.org/wiki/Shepard_tone I found
> >> consider a brass trio consisting of a trumpet, a
> horn, and a tuba. 
> >> They all start to play a repeating C scale
> (C-D-E-F-G-A-B-C) in their 
> >> respective ranges, i.e. they all start playing
> C's, but their notes 
> >> are all in different octaves. When they reach the
> G of the scale, the 
> >> trumpet drops down an octave, but the horn and
> tuba continue 
> >> climbing. They're all still playing the same
> pitch class, but at 
> >> different octaves. When they reach the B, the
> horn similarly drops 
> >> down an octave, but the trumpet and tuba continue
> to climb, and when 
> >> they get to what would be the second D of the
> scale, the tuba drops 
> >> down to repeat the last seven notes of the scale.
> So no instrument 
> >> ever exceeds an octave range, and essentially
> keeps playing the exact 
> >> same seven notes over and over again. But because
> two of the 
> >> instruments are always "covering" the one that
> drops down an octave, 
> >> it seems that the scale never stops rising.
> >>
> >
> > Greetings from Sweden
> >
> > Per Boysen
> > www.boysen.se (Swedish)
> > www.looproom.com (international)
> >
> >
> >
> >
> 
> 


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