1. Mohamed EI Bachir EI Ibrahimi University,ETA Laboratory,Department of Electronic.,Bordj Bou Arreridj,Algeria,34030
2. Speech Com. & Signal Proc., Lab. Faculty of Electronics and Computer Sciences USTHB,Bab Ezzouar,Algeria,16 111
3. Mohamed EI Bachir EI Ibrahimi University,Faculty of Mathematics and Computer Science,Department of Computer Science,Bordj Bou Arreridj,Algeria,34030