In this sense threshold means a sort of transition point like the threshold when an FM radio signal breaks through from being just static to being music (or maybe an AD).

从这个意义上讲，“threshold”意味着一种临界点，就像一个开关，使得FM无线电信号从静止状态到播放音乐状态(或者，也可能是一个广告)的忽然变化。

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After a bandpass filter, QDPSK signal's symbol can be divided into steady section and transition section, so the demodulation and synchronization for the signal can be realized with DFT.

经过限带滤波后的QDPS K信号的码元波形可分为稳定区与过渡区，根据这一特点可以利用DFT方法来实现信号的解调和位同步。

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This essay introduces their structure, operating principles, mechanics analysis and signal transition.

本文就其结构、工作原理，力学分析和信号转换做一介绍。

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If this transition does work, then it will signal the project's success, as it will have continued after the original backers have ended their involvement.

BBC: Incomes rising: Antonio Guillerme next to his plot of land

He argues that the two readers signal E-ink's transition to larger-format digital media that include magazines and newspapers.

FORBES: Breakthroughs

In fact, Gorbachev has already given an unmistakable signal that he is determined not to "ease" the transition to a market economy but to delay -- if not forestall -- it.

CENTERFORSECURITYPOLICY: Center For Security Policy