void Excitation_signal_extrapolation(Ipp16s voiced, Ipp16s *fedelay, Ipp16s fescale,
Ipp16s nlsfescale, Ipp16s* etpast, Ipp16s *et, Ipp16s *nlset, Ipp16s *seed) {
Ipp16s temp, nlstemp,den,nlsden,nls;
Ipp32s i, aa0, aa1;
if(voiced == G728_TRUE) {
temp = fescale;
nlstemp = 15;
for(i=0; i<IDIM; i++)
etpast[i] = etpast[i-(*fedelay)];
/* nlstemp = 15;*/
}
if(voiced == G728_FALSE) {
*fedelay = Rand_G728_16s(seed);
aa1 = 0;
for(i=0; i<IDIM; i++) {
etpast[i] = etpast[i-(*fedelay)];
aa1 = aa1 + Abs_32s(etpast[i]);
}
if((aa1==0)||(fescale==0)) {
temp = 0;
nlstemp = 15;
} else {
Vscale_32s(&aa1, 1, 1, 30, &aa1, &nlsden);
den = Cnvrt_NR_32s16s(aa1);
nlsden = nlsden - 16;
Divide(fescale, nlsfescale, den, nlsden, &temp, &nlstemp);
}
}
for(i=0; i<IDIM; i++) {
aa0 = temp * etpast[i];
aa0 = ShiftR_32s(aa0, nlstemp);
aa0 = Cnvrt_32s16s(aa0);
etpast[i] = aa0;
}
Vscale_16s(etpast, IDIM, IDIM, 13, et, &nls);
*nlset = nls + 2;
return;
}
void ExcitationSignalExtrapolation(Ipp16s voiced, Ipp16s *fedelay, Ipp16s fescale,
Ipp16s nlsfescale, Ipp16s* etpast, Ipp16s *et, Ipp16s *nlset, Ipp16s *seed) {
Ipp16s temp = fescale, nlstemp = 15,den,nlsden,nls;
Ipp32s i, aa0, aa1;
if(voiced == G728_TRUE) {
for(i=0; i<IDIM; i++)
etpast[i] = etpast[i-(*fedelay)];
/* nlstemp = 15;*/
}
if(voiced == G728_FALSE) {
*fedelay = Rand_G728_16s(seed);
aa1 = 0;
for(i=0; i<IDIM; i++) {
etpast[i] = etpast[i-(*fedelay)];
aa1 = aa1 + Abs_32s(etpast[i]);
}
if((aa1==0)||(fescale==0)) {
temp = 0;
nlstemp = 15;
} else {
VscaleOne_Range30_32s(&aa1, &aa1, &nlsden);
den = Cnvrt_NR_32s16s(aa1);
nlsden = (Ipp16s)(nlsden - 16);
Divide_16s(fescale, nlsfescale, den, nlsden, &temp, &nlstemp);
}
}
for(i=0; i<IDIM; i++) {
aa0 = temp * etpast[i];
aa0 = aa0 >> nlstemp;
aa0 = Cnvrt_32s16s(aa0);
etpast[i] = (Ipp16s)aa0;
}
VscaleFive_16s(etpast, et, 13, &nls);
*nlset = (Ipp16s)(nls + 2);
return;
}
