Zero-order hold matlab

1. What is zero-order hold in Matlab?
2. What does zero-order hold do?
3. What is the difference between zero-order hold and first order hold?
4. Is zero-order hold a low pass filter?

What is zero-order hold in Matlab?

Description. The Zero-Order Hold block holds its input for the sample period you specify. If the input is a vector, the block holds all elements of the vector for the same sample period. You specify the time between samples with the Sample time parameter. A setting of -1 means the block inherits the Sample time.

What does zero-order hold do?

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.

What is the difference between zero-order hold and first order hold?

Whereas the Zero-Order Hold circuit generates a continuous input signal u(t) by holding each sample value u[k] constant over one sample period, a First-Order Hold circuit uses linear interpolation between samples as shown by the model of Figure 20.39 and...

Is zero-order hold a low pass filter?

In the frequency domain, then, the zero-order hold corresponds to processing the samples with an approximation to a lowpass filter corresponding to the Fourier transform of a rectangular pulse.