iLBC - a linear predictive coder with robustness to packet losses
S.V. Andersen, Willem Bastiaan Kleijn, Roar Hagen, J. Linden, Manohar N. Murthi, Jan Skoglund · 2003
In this paper, we discuss the internet low bit rate codec (iLBC) with an emphasis on the frame-independent long-term prediction. The frame-independent long-term prediction is a method to exploit pitch-lag correlations in the encoding of speech without suffering multiple-frame speech degradation in connection with transmission loss. We present mean opinion scores for the iLBC codec and show by means of signal examples how the nature of degradation in a predictive codec based on frame-independent long-term prediction differs from that of traditional CELP codecs.