Put it immediately after the failed moment in your edit, once the mistake is visible on screen. Follow it with Vine Boom to underline the impact, then add Dun Dun Dun as a closing beat that lets the failure sink in before the next scene begins.
关于此声音
Falla is a brief 2.6-second sound effect built around a single failed moment, with a clear cue that marks the point where something goes wrong. It feels awkward and comic rather than harsh, like a small, knowing nudge after a mistake.