我们现在做的将产生类似于立体声的系统，然后是四声道系统，然后环绕声系统。

What we're doing here will lead to the equivalent of stereo, then quadraphonic, then surround sound.

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面向虚拟战场提出了实现实时四声道立体声合成的简化算法。

Real time algorithms are given to generate 4 channel stereo sound for virtual battlefield.

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