(for left elision) e' = e2,
(for right elision) e' = e1,
all groups ending with e1 in G end with e' in G', and
all groups beginning with e2 in G begin with e' in G'.
Metrical MWFR 1 (revised)
Structure Every attack point must be associated with a beat at
the smallest metrical level present at that point in the
piece.
MWFR 2 (revised)
Every beat at a given level must also be a beat at all
smaller levels present at that point in the piece.
MWFR 3 *
At each metrical level, strong beats are spaced either
two or three beats apart.
MWFR 4 (revised) *
The tactus and immediately larger metrical levels
must consist of beats equally spaced throughout the
piece. At subtactus metrical levels, weak beats must
be equally spaced between the surrounding strong
beats.
MPR 1 (Parallelism)
Where two or more groups or parts of groups can be
construed as parallel, they preferably receive parallel
metrical structure.
MPR 2 (Strong Beat Early)
Weakly prefer a metrical structure in which the
strongest beat in a group appears relatively early in
the group.
MPR 3 (Event)
Prefer a metrical structure in which beats of level Li
that coincide with the inception of pitch-events are
strong beats of Li.
MPR 4 (Stress)
Prefer a metrical structure in which beats of level Li
that are stressed are strong beats of Li.
MPR 5 (Length)
Prefer a metrical structure in which a relatively strong
beat occurs at the inception of either
a. a relatively long pitch-event,
b. a relatively long duration of a dynamic,
c. a relatively long slur
d. a relatively long pattern of articulation
e. a relatively long duration of a pitch in the relevant
levels of the time span reduction, or
f. a relatively long duration of a harmony in the
relevant levels of the time-span reduction (harmonic
rhythm).
MPR 6 (Bass)
Prefer a metrically stable bass. |