We propose a differential encoding method for the long term predictor (LTP) delay in CELP coders. This method permits saving bits while preserving the coded speech quality. Fast delay changes between successive LTP updates are allowed and no buffering of long signal frames is necessary, which makes our method suited for use in low-and medium-delay coders.
Bibliographic reference. Popescu, Andrei / Moreau, Nicolas / Lamblin, Claude (1995): "A differential encoding method for the LTP delay in CELP coders", In EUROSPEECH-1995, 731-733.