Secured Communication of Speech Signal Using the Discrete Cosine Transform Based on Hyperchaos-System.

Noureddine Aissaoui, Fethi Demim, Abdenebi Rouigueb, Hadjira Belaidi, Ali Zakaria Messaoui, Kahina Louadj, Abdelkrim Nemra, Ahmed Allam, Yasmine Saidi, Said Sadoudi, Mohamed Salah Azzaz

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