Impact hit
Also known as: hit, stinger
A short, loud sound effect placed on a cut or a landing to make a visual moment hit harder than the picture manages alone.
Updated
What it means
An impact hit is a deliberate sound effect rather than anything recorded on the day. A low boom, a snare crack or a metallic clang is placed exactly on one frame to punctuate it, usually against the Beat drop or a landing.
The reason it works is that camera audio from a moving mount rarely captures the moment. A landing that looked enormous arrives as wind and a faint thud, and the hit restores the weight.
It is a punctuation mark rather than a texture. One or two in a highlight read as production value, while a dozen read as a template and stop registering at all.
How it works in practice
Placement is to the frame, not to the beat. A hit belongs on the instant of contact, and if that instant does not fall on the Beat grid then the hit wins and the grid gives way.
Layering under the existing sound works better than replacing it. Keeping the real Ambient sound underneath keeps the shot believable while the effect supplies the impact.
Low frequency content is what carries weight, so a hit with energy underneath the music is felt rather than heard, which survives small speakers better than a bright crack does.
What to watch out for
Hits placed on every cut destroy their own effect. The ear adapts within a few repetitions, and what was emphasis becomes rhythm nobody asked for.
A hit on the wrong frame is worse than none. Even a few frames early reads as a mistake, because the sound and the picture disagree about when something happened.
Loud hits also eat headroom. Stacking an effect on top of a full music mix pushes the result into Clipping unless the music steps back for the duration of the hit, which is a second reason to use them sparingly rather than on every cut.
How RawClip handles it
Where a landing or an impact is the point of a shot, a short effect is placed on the frame of contact underneath the real camera sound. They are used sparingly, because an effect on every cut stops being emphasis and becomes wallpaper.