More About Swing - E-Mu XL-7 Command Station Owner's Manual

Sequencer
Pattern Edit Menu
50% Swing
Eighth notes play at regular intervals
0% 50% 100%
If swing were set to 67%, the first eighth note falls on the beat, but the
second eighth note is delayed by 67%.
67% Swing
Every other eighth note plays late
0% 67%
Values below 50% give a kind of "reverse swing" where every other eighth
note comes in early. Odd, but maybe just the thing for your style of music.
30% Swing
Every other eighth note plays early
30%

More about Swing

Swing can help add a more human "feel" to a series of repeating patterns.
For example, if you repeat the same pattern four times, try setting a swing
factor of 54% for, say, the third pattern. This results in a series of patterns
which are more psycho-acoustically interesting than merely repeating the
same pattern over and over.
67% is considered the "classic" jazz swing factor, where the first eighth note
is 2/3 of a quarter note, and the second eighth note is 1/3 of a quarter note
(i.e. the second eighth note behaves more like an eighth note triplet). If this
sounds too "perfect", try a swing factor of 64% instead. The results will be
similar, but the "feel" will be slightly different.
80 E-MU Systems