Zero-order hold

（重定向自Zero Order Hold）

Figure 1. The time-shifted and time-scaled rect function used in the time-domain analysis of the ZOH.

Figure 2. Piecewise-constant signal xZOH(t).

The zero-order hold (ZOH) is a mathematical model of the practical signal reconstruction done by a conventional digital-to-analog converter (DAC). That is, it describes the effect of converting a discrete-time signal to a continuous-time signal by holding each sample value for one sample interval. It has several applications in electrical communication.

单词	Zero Order Hold
释义	Zero Order Hold 英语百科 Zero-order hold （重定向自Zero Order Hold） The zero-order hold (ZOH) is a mathematical model of the practical signal reconstruction done by a conventional digital-to-analog converter (DAC). That is, it describes the effect of converting a discrete-time signal to a continuous-time signal by holding each sample value for one sample interval. It has several applications in electrical communication.
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