Human voices, music, and sound effects are used in the production of films. These three types of noises are essential for a film's viewers to feel authentic. Sounds and dialogue in a film must be in perfect time with the action and must sound exactly as it appears. If a sound doesn't match the motion on the screen, the action isn't nearly as convincing. Using individual sound clips rather than sound libraries for sound effects is one technique to generate genuine, high-quality sounds. For example, at the beginning of my film, I'm making it as if it's a horror film, sound design and foley might help to increase the suspense. In other horror films, it's better to instead of simply showing zombies or vampires, a terrifying sound or tense music cue can elicit the same reaction in the viewer. Suspense created with sound rather than pictures often feels more authentic to the audience because they interact with the sound subconsciously. The first method sound design ma...