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Pole–zero plot

In mathematics, signal processing and control theory, a pole–zero plot is a graphical representation of a rationaltransfer function in the complex plane which helps to convey certain properties of the system such as: StabilityCausal system / anticausal systemRegion of convergence (ROC)Minimum phase / non minimum phaseA pole-zero plot shows the location in the complex plane of the poles and zeros of the transfer function of a dynamic system, such as a controller, compensator, sensor, equalizer, filter, or communications channel.

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