Active noise control (ANC) is a new high technology integrated with acoustic, adaptive control and digital signal process and it has become the research focus center of noise control.

主动噪声控制是集声学、自适应控制及数字信号处理等技术为一体的高新技术，已成为国内外噪声控制界的研究热点。

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Carlson is arranging guided tours for visitors to Kodak's medical-imaging facility in the Olympic Village and the press center (where Kodak will process 5 million digital images), along with tickets to carefully selected Olympic events and perks like visits to the Great Wall and trips to Beijing's Silk Market.

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