1) Asynchrony 2) Desynchronisation 3) Desynchronization 4) Desynchronizing 5) Temporal relation 
If the visual frame and the audio track are not in consonant conjunction with one another an asynchronistic effect occurs. This is sometimes manipulated intentionally for creative reasons but often occurs accidentally. The term can also be applied to occasions when, in the showing of a film, the individual sound-track and visual track become tempor...
(a-sing´krә-niz-әm) asynchrony.
[n] - the relation that exists when things occur at unrelated times
asynchronism, ansynchronous Not coinciding in time; not corresponding in time.asynchronism, asynchronous, asynchrony 1. Operating at a rate determined by the system rather than at a regular rate of chronological time; without a fixed time pattern. 2. Describing the relationship of two or more systems that run at their own rates and interact at unpredictable times.
asynchrony noun the relation that exists when things occur at unrelated times; `the stimulus produced a desynchronizing of the brain waves`
a lack of synchronism or coincidence in time.