LSFQ_DIFF_MIN     230 libavcodec/g729dec.c     ff_acelp_reorder_lsf(lsfq, LSFQ_DIFF_MIN, LSFQ_MIN, LSFQ_MAX, 10);
LSFQ_DIFF_MIN     168 libavcodec/sipr.c     ff_set_min_dist_lsf(lsfnew, LSFQ_DIFF_MIN, LP_FILTER_ORDER - 1);
LSFQ_DIFF_MIN     195 libavcodec/sipr16k.c     ff_set_min_dist_lsf(lsf_new, LSFQ_DIFF_MIN / 2, LP_FILTER_ORDER_16k);