apply_tns        1572 libavcodec/aac.c                     apply_tns(che->ch[0].coeffs, &che->ch[0].tns, &che->ch[0].ics, 1);
apply_tns        1574 libavcodec/aac.c                     apply_tns(che->ch[1].coeffs, &che->ch[1].tns, &che->ch[1].ics, 1);