lpc_weighting    1034 libavcodec/amrwbdec.c         lpc_weighting(hb_lpc, hb_lpc, 0.9, LP_ORDER_16k);
lpc_weighting    1036 libavcodec/amrwbdec.c         lpc_weighting(hb_lpc, ctx->lp_coef[subframe], 0.6, LP_ORDER);