NOISE_OFFSET     1486 libavcodec/aacdec_template.c     int offset[3] = { global_gain, global_gain - NOISE_OFFSET, 0 };
NOISE_OFFSET      388 libavcodec/aacenc.c     int diff, off_sf = sce->sf_idx[0], off_pns = sce->sf_idx[0] - NOISE_OFFSET;