Sound design aims to restore the most realistic three-dimensional sound field

The traditional form of sound reinforcement generally uses the left and right two-channel stereo sound reinforcement, left in the right three-channel stereo sound reinforcement, or on the basis of the main sound reinforcement to increase the multi-channel effect sound reinforcement.

For the main sound reinforcement system, due to the large space area of the theater, the best listening area is very limited. Even with 5.1 channel or 7.1 channel, there are also relatively large limitations.

For example, the effect sound can only cover the audience area, can not cover the stage area; audience area only flat surround effect, no top effect.

For the theater, the audience area effective feeling area is small; sound and image positioning is not precise, can only reflect the effect of a surface.