NUM_PHASES
for (phase = 0; phase < (NUM_PHASES / 2 + 1); phase++) {
for (phase = 0; phase < (NUM_PHASES / 2 + 1); phase++) {
for (phase = 0; phase < (NUM_PHASES / 2 + 1); phase++) {
for (i = 0; i < NUM_PHASES; ++i, ++smpl_phase) {