如果两个路径在循环中重叠，则返回1，否则返回0。

If the two paths overlap within the cycle, a 1 is returned; otherwise a 0 is returned. Here is the declaration of the udf.

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画一个小发言人图标的形状。它旁边，创造出一个新月形状由两个重叠的循环。加证明层风格，类似于以前的按钮。

Draw a small speaker icon shape. Next to it, create a crescent shape made of two overlapping circle. Add following layer styles, similar to previous buttons.

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针对单信道中时频重叠双信号的载波频率估计问题，提出一种基于二阶循环累积量的载波频率估计方法。

Aiming at time-frequency overlapped two-signals in single-channel, this paper proposed a method to estimate carrier frequency based on second-order cyclic cumulants.

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