static void
feat_agc(feat_t *fcb, mfcc_t **mfc, int32 nfr, int32 beginutt, int32 endutt)
{
agc_type_t agc_type = fcb->agc;
if (!(beginutt && endutt)
&& agc_type != AGC_NONE) /* Only agc_emax in block computation mode. */
agc_type = AGC_EMAX;
switch (agc_type) {
case AGC_MAX:
agc_max(fcb->agc_struct, mfc, nfr);
break;
case AGC_EMAX:
agc_emax(fcb->agc_struct, mfc, nfr);
if (endutt)
agc_emax_update(fcb->agc_struct);
break;
case AGC_NOISE:
agc_noise(fcb->agc_struct, mfc, nfr);
break;
default:
;
}
cep_dump_dbg(fcb, mfc, nfr, "After AGC");
}
static void
feat_compute_utt(feat_t *fcb, mfcc_t **mfc, int32 nfr, int32 win, mfcc_t ***feat)
{
int32 i;
cep_dump_dbg(fcb, mfc, nfr, "Incoming features (after padding)");
feat_cmn(fcb, mfc, nfr, 1, 1);
feat_agc(fcb, mfc, nfr, 1, 1);
/* Create feature vectors */
for (i = win; i < nfr - win; i++) {
fcb->compute_feat(fcb, mfc + i, feat[i - win]);
}
feat_print_dbg(fcb, feat, nfr - win * 2, "After dynamic feature computation");
if (fcb->lda) {
feat_lda_transform(fcb, feat, nfr - win * 2);
feat_print_dbg(fcb, feat, nfr - win * 2, "After LDA");
}
if (fcb->subvecs) {
feat_subvec_project(fcb, feat, nfr - win * 2);
feat_print_dbg(fcb, feat, nfr - win * 2, "After subvector projection");
}
}
static void
feat_cmn(feat_t *fcb, mfcc_t **mfc, int32 nfr, int32 beginutt, int32 endutt)
{
cmn_type_t cmn_type = fcb->cmn;
if (!(beginutt && endutt)
&& cmn_type != CMN_NONE) /* Only cmn_prior in block computation mode. */
cmn_type = CMN_PRIOR;
switch (cmn_type) {
case CMN_CURRENT:
cmn(fcb->cmn_struct, mfc, fcb->varnorm, nfr);
break;
case CMN_PRIOR:
cmn_prior(fcb->cmn_struct, mfc, fcb->varnorm, nfr);
if (endutt)
cmn_prior_update(fcb->cmn_struct);
break;
default:
;
}
cep_dump_dbg(fcb, mfc, nfr, "After CMN");
}