A new hybrid long-term and short-term prediction algorithm for packet loss erasure over IP-networks

TitleA new hybrid long-term and short-term prediction algorithm for packet loss erasure over IP-networks
Publication TypeConference Paper
Year of Publication2003
AuthorsElsabrouty, M., M. Bouchard, and T. Aboulnasr
Conference NameSignal Processing and Its Applications, 2003. Proceedings. 7th International Symposium on
Pagination361 - 364 vol.1
Date Publishedjul.
Keywordsinformation transmission, Internet protocol, Internet telephony, IP networks, IP-network, linear prediction model-reverse order replicated pitch period, linear predictive coding, long-term prediction algorithm, packet corruption, packet delay, packet loss, packet misrouting, packet repetition, packet switching, PCM coded speech, pulse code modulation, short-term prediction algorithm, speech coding, speech concealment algorithm, speech segment, standard mean opinion scale score, voice communication, voice transmission

Packet loss is a common problem in Internet protocol (IP) networks. Delayed, misrouted or corrupted packets all introduce a gap in the information stream being transmitted. This gap is even more critical in the case of real time voice transmission that does not tolerate delay. The receiver in this case is obliged to generate a signal to play instead of the missing speech segment. This paper introduces a high performance speech concealment algorithm for PCM coded speech. The proposed algorithm implements a combination of linear prediction model and reverse order replicated pitch period (RORPP) implemented as in the ITU-T G.711. The new algorithm produced better objective MOS scores when compared to both the commercial tool of packet repetition and to the above mentioned ITU-T long term prediction standard.


a place of mind, The University of British Columbia

Electrical and Computer Engineering
2332 Main Mall
Vancouver, BC Canada V6T 1Z4
Tel +1.604.822.2872
Fax +1.604.822.5949

Emergency Procedures | Accessibility | Contact UBC | © Copyright 2021 The University of British Columbia