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Looper's Delight
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I'm afraid I don't know about that, Daryl. But when you have time, try it out with a looper set to overdub. Play slide guitar glissando and fade in each new start with a volume pedal/knob. Try all combinations of octaves and numbers of layers. After an hour you will know everything about Guitar Shepard Looping and tell the list about the tricks. per On 9 nov 2007, at 16.29, Daryl Shawn wrote: > Per, thanks for this, I missed this on the Wiki page. I'm working > it out on guitar, but am not convinced it really creates the same > illusion, possibly because there are only so many octaves to work > with. In the example below, do you have any idea if the instruments > are spread so far apart that no instrument ever crosses into the > other's octave? I'm going to try to record my version this weekend. > > and Qua, thanks for the Exploratium link. I visited the museum a > number of years ago and vaguely remember the round > keyboards...super cool. > > Daryl Shawn > www.swanwelder.com > www.chinapaintingmusic.com >>> 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. >