PITCH_MAX_PERIOD   54 libavfilter/af_arnndn.c #define PITCH_BUF_SIZE (PITCH_MAX_PERIOD+PITCH_FRAME_SIZE)
PITCH_MAX_PERIOD  796 libavfilter/af_arnndn.c     float yy_lookup[PITCH_MAX_PERIOD+1];
PITCH_MAX_PERIOD 1024 libavfilter/af_arnndn.c     pitch_search(pitch_buf+(PITCH_MAX_PERIOD>>1), pitch_buf, PITCH_FRAME_SIZE,
PITCH_MAX_PERIOD 1025 libavfilter/af_arnndn.c             PITCH_MAX_PERIOD-3*PITCH_MIN_PERIOD, &pitch_index);
PITCH_MAX_PERIOD 1026 libavfilter/af_arnndn.c     pitch_index = PITCH_MAX_PERIOD-pitch_index;
PITCH_MAX_PERIOD 1028 libavfilter/af_arnndn.c     gain = remove_doubling(pitch_buf, PITCH_MAX_PERIOD, PITCH_MIN_PERIOD,