New 3d Sound System

Imagine being able to watch a movie but hearing all the sound affects and music as you would in real life: the sounds coming at you from all different directions. Mr. Choueiri from Princeton University has found a way to make this idea a reality. With the new software that Mr.Choueiri has invented it will soon be possible to experience a movie as is you were actually there in person. This is a great break-through in technology.

However, there were many challenges that the team in Princeton University had to face to make this sound system possible. Unlike surround sound this new software had to project the sounds in such a way that the sounds painted an image of the scene thus making the sounds 3d. After concluding that there would be two earphones for the devise to simulate the function of the real ears, the main problem that the team faced was determining how to separate the sounds that both the right ear and left ear hear. Through normal headphones this sound would get mashed together and would be heard by both ears what was only meant for one ear. Thus this would take away form the 3d effect. Since the sound coming from the right and the left of the person meshes together and is heard in both ears, it is impossible to tell where the sound originally came from. Thus it would not seem 3d. To remedy this, the team placed a filter called a cross-talk cancellation which allowed the sound coming from the right to reach the right headphone only and he left to the left headphone. The only problem with this filter was that it colored the sound and altered it so that it would not be accepted as tonally correct(ex: a piano not sounding like a piano). This was the main thing that the team had to do to make the the 3d sound system accurate and effective. Once this was modified the 3d sound system was born.

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