N2 - Despite the growing importance of packet switching systems, there is still a shortage of thorough analyses of VoIP transmission effect on speech and speaker recognition performance. Voice over IP transmission systems use packet switching. There is no guarantee of delivery. The main disadvantage of VoIP is a packet loss which has a major impact on the performance experienced by the users of the network. There are several techniques to mask the effects of a packet loss, referred to as packet loss concealment. In this study, the effect of voice transmission over IP on automatic speaker verification system performance was investigated. The analyzed system was based on MAP-EM-GMM modelling methods. Four various speech codecs of H.323 standard were investigated with special emphasis placed on the packet loss phenomenon and various packet loss concealment techniques. L1 - http://journals.pan.pl/Content/101403/PDF/11_paper.pdf L2 - http://journals.pan.pl/Content/101403 PY - 2015 IS - No 3 EP - 417 DO - 10.1515/aoa-2015-0042 KW - automatic speaker verification KW - packet loss KW - speech compression KW - voice over IP A1 - Maciejko, Waldemar PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 40 DA - 2015[2015.01.01 AD - 2015.12.31 AD] T1 - The Effect of Voice over IP Transmission Degradations on MAP-EM-GMM Speaker Verification Performance SP - 407 UR - http://journals.pan.pl/dlibra/publication/edition/101403 T2 - Archives of Acoustics