int32_t osc_p;
static const int blepvoices = 4;
int16_t *oscp[blepvoices];
int32_t vgain[blepvoices];
uint32_t nextvoice;
int32_t i0;

int j;
for (j = 0; j < blepvoices; j++)
  oscp[j] = &blept[BLEPSIZE - 1];
nextvoice = 0;
i0 = 0;

int32_t freq;
MTOFEXTENDED(param_pitch + inlet_pitch, freq);
int j;
int16_t *lastblep = &blept[BLEPSIZE - 1];
for (j = 0; j < BUFSIZE; j++) {
  int i;
  int p;
  p = osc_p;
  osc_p = p + freq;
  int i1 = inlet_sync[j] >> 2;
  if ((i1 > 0) && !(i0 > 0)) { // phase reset
    nextvoice = (nextvoice + 1) & (blepvoices - 1);
    int32_t x = 64 - ((-i0 << 6) / (i1 - i0));
    oscp[nextvoice] = &blept[x];
    vgain[nextvoice] = vgain[nextvoice] =
        (((x * (freq >> 7)) + (((uint32_t)p) >> 1))) >> 18;
    osc_p = x * (freq >> 6);
  } else if ((osc_p > 0) && !(p > 0)) { // dispatch
    nextvoice = (nextvoice + 1) & (blepvoices - 1);
    int32_t x = osc_p / (freq >> 6);
    oscp[nextvoice] = &blept[x];
    vgain[nextvoice] = 1 << 13;
  }
  i0 = i1;
  int32_t sum = 0;
  for (i = 0; i < blepvoices; i++) { // sample
    int16_t *t = oscp[i];
    sum += (16384 - (*t)) * vgain[i];
    t += 64;
    if (t >= lastblep)
      t = lastblep;
    oscp[i] = t;
  }
  // sum = -sum;
  uint32_t g = osc_p;
  outlet_wave[j] = (g >> 5) + sum - (1 << 26);
}