Schachter (1987). A time span intiated by a change of harmony at a
weak beat within a hypermetric unit. In the four-bar hypermeasure below,
the V7 chord in mm.2-3 articulates a syncopated time span.
A quasi-metric effect accompanies those two measures.
4 I | V7 | V7 | I |
effect: 4 V7 |