Sound-image timing is the temporal relationship between a visible event and the sound elements assigned to it. It contributes to the event’s presentation without functioning as a direct measurement of its physical force.
Attack, decay and overlap
A sound’s attack is its onset; its tail is the continuation after the initial event. In rapid sequences, the continuation of one sound can overlap the beginning of the next.
The John Wick: Chapter 4 sound team shortened some shot tails to preserve the next shot’s attack. The adjustment concerned distinction between events, not simply making every sound louder.
A layered gunshot also contains components with different functions. Changing distance can change the selection of elements rather than only their playback level. A close and distant version therefore need not be the same recording at different volumes.
Timing within a layered event
The same production account describes slightly advancing a low-frequency layer to improve integration of a close gunshot. That is a documented craft decision and its intended effect. It is not a universal timing prescription or an experimentally established response for every listener.
Take a constructed sequence containing three impacts. If the first sound continues across the following two without distinction, the audible event structure differs from three separated attacks. The visual count remains three; the sound organization changes how their timing is presented.
Revised images and material consequences
An image revision can require a sound revision. Changes to visible glass debris in John Wick: Chapter 4 led to corresponding sound changes. Breakage and later movement over debris also belong to different sound tasks, with the latter including Foley.
The sound of a discharge, its consequence and movement through the altered space therefore forms a chain of related events. Treating them as one undifferentiated loud effect removes information about what happened and when.
Perception and measurement
The soundtrack can emphasize separation, continuity or weight through its construction. A statement about those design aims should remain distinct from a measured claim about audience perception.
What varies is the timing and composition appropriate to the sequence. The consistent requirement is agreement between the event being represented and the audible information used to represent it.