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停止种族主义言论(5)

Racist chanting is a problem all over the world. So, some Dutch researchers are looking for ways to stop, or at least slow, abusive or racist chants.

A new method uses sound to confuse people who are chanting abusive or racist words. Sander van Wiingaarden is a Dutch researcher.

He researches how sounds affect the human brain. He saw how racist chants affected Dutch football games.

So, in 2004, Sander began working on a project to neutralize these racist chants. He wanted them to lose their power.

The system would record a crowd's racist chanting. Then it would play the recording back to the crowd with a small delay.

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