"The sound effects are artificially created or enhanced sounds or sound processes used to emphasize artistic or other content of films, television shows, live performance, animation, video game, music, or other media." Wiki.
When you are playing games such as Counter Strike or Quake, the sound you hear while firing is the sound effect. Every weapon has its corresponding sound effect. In the early times, the sound effect came from the sound synthesis, a kind of midi rhythm. Today, the game studio can sample the sound from real instances. In making a racing game, the engine sound of every car is different. The game studio can record the sound from a real car, maybe a Lamborghini or a Panamera Turbo, to make the game more realistic. The Windows Phone 7 XNA framework simplifies the work needed to control sound effects. It is up to you to use the sound effects in your game. In this recipe, you will learn how to make your game more interesting by applying sound...