has been lost yes at decision block 501 then block 503 sets a first alternate adaptation parameters values for these parameters for a preferred embodiment are shown in table 1 below as shown in table 1 these adaptation parameters include predictor poles step sizes and leak factors quantization scale factors and adaptation speed control during packet loss these first alternative parameters include larger values of the step size to track faster and larger leak factors to keep the predictor stable this first alternate set of parameters includes a lower quantization scale factor and generally lower adaptation speed control block 504 adaptively operates employing the first alternative parameters decision block 505 determines whether a first good packet is received if a first good packet has not been received no in decision block 505 then the invention repeats the adaptive predictor operation of block 505 using the first alternative parameters as before this loop repeats until decision block 505 detects the first good packet following the packet loss decision block 501 if the current packet is the first packet following packet loss yes at decision block 505 then block 506 sets a second alternate parameters values for these parameters for a preferred embodiment are shown in table 1 below the parameters are set for this first good packet to.