And if, on top of the bright pulse, a smaller pulse of just the right type is sent, the detector can be forced to record a one or a zero.
并且，如果在强脉冲之上，有一较小的，类型恰巧合适的脉冲发射的话，探测器就只能记录下一个1或者0。
2
Zero-crossing detector is capable of predicting the shape changes of power spectrum so as to find the newly emerged moving sound sources in ambient noise.
Before the design of digital circuit, measurement method of phase difference is discussed. Two-way zero passage phase detector is chosen as solution finally.