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Some New Developments on the Al-Alaoui and the Pei and Hsu s-to-z Transforms

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1 Author(s)
Auger, F. ; Inst. de Rech. en Electrotech. et Electron. de Nantes-Atlantique (IREENA), Nantes, France

This brief refocuses on three classes of s-to-z transforms. For each class, a closed-form expression is proposed, and a particular element, having an imaginary part of its frequency response very close to the ideal value, is presented. These s-to-z transforms are then related to all-pass infinite-impulse-response fractional delay filters, allowing another way to choose their degree of freedom.

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:57 ,  Issue: 6 )