The time-domain filter can then be used to select the narrow central portion of the cross correlation function (CCF), capturing virtually all of the signal but rejecting most of the noise.
对相关函数进行时域滤波，挑选出互相关函数中窄信号自相关函数部分，去掉剩余的大部分噪声能量，得到加窗互相关函数（CCF）。
English is used in virtually all cross-cultural interactions, like business and tourism. In fact, there are twice as many non-native English speakers than natives!
英语作为国际语言广泛应用于商务，旅游，跨文化交流等用途。事实上，使用英语的非母语者人数是英语母语者人数的两倍。
English is used in virtually all cross-cultural interactions, like business and tourism. In fact, there are twice as many non-native English speakers than natives!
英语作为国际语言广泛应用于商务，旅游，跨文化交流等用途。事实上，使用英语的非母语者人数是英语母语者人数的两倍。
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