DECAY_SLOPE       748 libavcodec/aacps.c           g_decay_slope = (1 << 30) - DECAY_SLOPE * (k - DECAY_CUTOFF[is34]);
DECAY_SLOPE       751 libavcodec/aacps.c         float g_decay_slope = 1.f - DECAY_SLOPE * (k - DECAY_CUTOFF[is34]);