A First-order Hold (FoH) is a method used in digital signal processing and control systems to reconstruct a continuous-time signal from discrete samples. It is an interpolation technique that approximates the value of the continuous signal between the discrete sample points. ### Key Features of First-order Hold: 1. **Linear Interpolation**: The First-order Hold generates a piecewise linear approximation of the signal. Between two consecutive sample points, it forms a straight line that connects the two samples.

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  1. Digital signal processing
  2. Algorithms
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