WASET
    Ayaz Keerio and  Bhargav Kumar Mitra and  Philip Birch and  Rupert Young and  Chris Chatwin,  On Preprocessing of Speech Signals.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2008, vol. 23(11). 3693 - 3699
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/4471.