func: static void truespeech_apply_twopoint_filter(TSContext *dec, int quart)
  
  {
  
      int16_t tmp[146 + 60], *ptr0, *ptr1;
  
      const int16_t *filter;
  
      int i, t, off;
  
  
  
      t = dec->offset2[quart];
  
      if(t == 127){
  
          memset(dec->newvec, 0, 60 * sizeof(*dec->newvec));
  
          return;
  
      }
  
      for(i = 0; i < 146; i++)
  
          tmp[i] = dec->filtbuf[i];
  
      off = (t / 25) + dec->offset1[quart >> 1] + 18;
  
  
      ptr0 = tmp + 145 - off;
  
      ptr1 = tmp + 146;
  
      filter = (const int16_t*)ts_order2_coeffs + (t % 25) * 2;
  
      for(i = 0; i < 60; i++){
  
          t = (ptr0[0] * filter[0] + ptr0[1] * filter[1] + 0x2000) >> 14;
  
          ptr0++;
  
          dec->newvec[i] = t;
  
          ptr1[i] = t;
  
      }
  
  }