Sound is far more complicated, first of all, when


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送交者: steven 于 2010-12-19, 01:10:39:

回答: 查了wiki waves can multiply too. 由 tidan 于 2010-12-19, 00:19:27:

sound propagates through air, the media is not fixed, the interaction is difficult to model. Also, hearing is a physiological process, and it is more than just measuring electrical signals.



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