The capacity to make numerous concurrent recordings of the same subject—with the help of several multitrack recorders or DAT—has turned sound recording into a refined art. The sound effect could be created by the sound designer or sound editor, not only for practicality, but also for an emotional effect. When the sound effects are captured, they are generally uploaded to a computer comprising of an audio non-linear editing system. This permits the sound editor to greatly maneuver a sound to fulfill his or her requirements.
The most commonly found sound design mechanism is the utilization of layering to produce an interesting sound from 2 or 3 average sounds. For example, the sound of the impact of a bullet into the carcass of a pig can be mixed with the sound of a huge melon being stabbed to boost the "gore" or "stickiness" of the effect. If the effect is included in a particular close-up, the sound designer could also insert any "impact sweetener" from his or her own library of sounds. The impact sweetener could just be the sound made by a hammer hitting a hard surface, equalized in such a way that only the low-end could be heard. The low end gives out a heavy sound; so heavy that the audience could actually feel the actual impact of the bullet striking one’s arm.
If the wounded is a villain, and his demise is part of the climax, the designer could also add a reverb to the impact, to boost the impressive beat. And when the victim falls in slo-mo, the sound editor could also insert the sound made by a broomstick whooshing near a microphone to further emphasize the death. If the film is a sci-fi film, the sound designers can phaser the whooshing sound to add a more sci-fi feel.