G729_AGC_FACTOR   610 libavcodec/g729postfilter.c         gain_prev = (G729_AGC_FACTOR * gain_prev + 0x4000) >> 15;
G729_AGC_FACTOR    48 libavcodec/g729postfilter.h #define G729_AGC_FAC1 (32768-G729_AGC_FACTOR)