The bond between causal complex cepstra and Sheffer polynomials |
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Abstract: | A strong bond is established between causal complex cepstra and Sheffer polynomials. This bond results in the generation of parametric classes of discrete-time signals and their associated complex cepstra. These signals generally have more advanced singularities than the poles of signals with rational z-transforms. Examples are presented which illustrate the behavior of signals having branch points and essential singularities. |
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