CONF Ganapathy_TSD2009_2009/IDIAP Error Resilient Speech Coding Using Sub-band Hilbert Envelopes Ganapathy, Sriram Motlicek, Petr Hermansky, Hynek 12th International Conference on Text, Speech and Dialogue, TSD 2009 Pilsen, Czech Republic LNAI 5729 2009 Springer - Verlag, Berlin Heidelberg 2009 September 2009 0302-9743 3-642-04207-4 Frequency Domain Linear Prediction (FDLP) represents a technique for auto-regressive modelling of Hilbert envelopes of a signal. In this paper, we propose a speech coding technique that uses FDLP in Quadrature Mirror Filter (QMF) sub-bands of short segments of the speech signal (25 ms). Line Spectral Frequency parameters related to au-toregressive models and the spectral components of the residual signals are transmitted. For simulating the effects of lossy transmission channels, bit-packets are dropped randomly. In the objective and subjective quality evaluations, the proposed FDLP speech codec is judged to be more resilient to bit-packet losses compared to the state-of-the-art Adaptive Multi-Rate Wide-Band (AMR-WB) codec at 12 kbps.