%0 Journal Article
%T Sequential Tests for the Detection of Voice Activity and the Recognition of Cyber Exploits
%A Ehab Etellisi
%A P. Papantoni-Kazakos
%J Communications and Network
%P 185-199
%@ 1947-3826
%D 2011
%I Scientific Research Publishing
%R 10.4236/cn.2011.34022
%X We consider the problem of automated voice activity detection (VAD), in the presence of noise. To attain this objective, we introduce a Sequential Detection of Change Test (SDCT), designed at the independent mixture of Laplacian and Gaussian distributions. We analyse and numerically evaluate the proposed test for various noisy environments. In addition, we address the problem of effectively recognizing the possible presence of cyber exploits in the voice transmission channel. We then introduce another sequential test, designed to detect rapidly and accurately the presence of such exploits, named Cyber Attacks Sequential Detection of Change Test (CA-SDCT). We analyse and numerically evaluate the latter test. Experimental results and comparisons with other proposed methods are also presented.
%K Voice Activity Detection
%K Sequential Detection of Change Test
%K Cyber Exploits
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=8471