             *pOverflow = 0;             Syn_filt(Az, excp, &synth[i_subfr], L_SUBFR,                      st->mem_syn, 0);         }         else         {             *pOverflow = 0;             Syn_filt(Az, exc_enhanced, &synth[i_subfr], L_SUBFR,                      st->mem_syn, 0);         }          if (