S. G. Aliushina, P. E. Denisenko, O. G. Morozov, I. R. Sadykov, O. A. Stepuschenko
A.I. Tyazhev - Dr. Sc. (Eng.), Professor, Department of Radio Broadcasting and Television,
Volga State University of Telecommunications and Informatics (Samara). E-mail: tyagev@psati.ru