In the movie Hobbits, there is a scene about the hero face a dragon. In my point of view, the dragon’s voice wasn’t sounds nicely because it did not have much reverb on its voice, which does not make sense because the scene happen in a city in a huge close environment and it should have lots of reverb. Also, I want to add some spatial effect on its voice, so the sound and video can be more interactive. In this project, I extract the voice track from movie Hobbits, split it into two parts – main voice and others. Then I use leap motion controller to control the sound image position for the dragon voice. Finally, I add a reverb to the dragon’s voice.