Wajdi Ghezaiel and  Amel Ben Slimane Rahmouni and  Ezzedine Ben Braiek,  Evaluation of a Multi-Resolution Dyadic Wavelet Transform Method for usable Speech Detection.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2011, vol. 55(7). 856 - 860
    [viewed 25 January 2020]. Available from: https://publications.waset.org/pdf/9967.