Xna AudioEmitter & AudioLIstener

Can you tell me how exactly does that thing works. I mean how audioListnere knows, that audioEmitter is playing something ? We are making game with few friends, and i am responsible for the audi开发者_Go百科o, and i am collection all kind of knowledge. I apprieciate all kind of help.

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Here is an article about Dynamic Audio from XNA Creators website. They also have a 3D Audio sample.

There is also the SoundLab with 170 audio files which maybe a good starting point.