A point of harmonic, melodic, and rhythmic arrival that turns
everything before it into an upbeat (Cone,1968). Also a
point of simultaneous harmonic and rhythmic arrival (after Cone) (Epstein, 1979).
In the terminology of Lerdahl
and Jackendoff (1983), the convergence of structural accent,
metrical accent, and harmonic arrival at a singe moment. This definition
is also favored by Kramer