[BenDaglish]

They're describing the space in between the notes... so 4 equally spaced notes would have 3 gaps of 1:1:1 . It is indeed a bit confusing, as it says nothing about the duration of the last note, which to my ears would be an intrinsic part of the pattern.

[kj2413]

1:1:1 is an isochronous (equal) rhythm. Most of the rhythms in the paper are played repeatedly, so the last note has the same duration.

[Jill_the_Pill]

Yikes that is a lousy notation. How would they designate the Bo Diddley beat: 0.75: 0.75: 0.75: 0.5: 0.5?

[nukmul]

or 3:3:3:2:2?

[pier25]

Thank you, I thought I was going crazy.