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Add LPCNet decoder object

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This commit is contained in:
Jean-Marc Valin 2019-03-18 14:13:07 -04:00
parent fe608dfc51
commit 54b057c9cd
7 changed files with 144 additions and 39 deletions
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29
dnn/lpcnet_enc.c
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@ -398,35 +398,6 @@ int double_interp_search(const float features[4][NB_TOTAL_FEATURES], const float
return best_id - (best_id >= FORBIDDEN_INTERP);
}
static void single_interp(float *x, const float *left, const float *right, int id)
{
int i;
float ref[NB_BANDS];
float pred[3*NB_BANDS];
RNN_COPY(ref, x, NB_BANDS);
for (i=0;i<NB_BANDS;i++) pred[i] = .5*(left[i] + right[i]);
for (i=0;i<NB_BANDS;i++) pred[NB_BANDS+i] = left[i];
for (i=0;i<NB_BANDS;i++) pred[2*NB_BANDS+i] = right[i];
for (i=0;i<NB_BANDS;i++) {
x[i] = pred[id*NB_BANDS + i];
}
if (0) {
float err = 0;
for (i=0;i<NB_BANDS;i++) {
err += (x[i]-ref[i])*(x[i]-ref[i]);
}
printf("%f\n", sqrt(err/NB_BANDS));
}
}
void perform_double_interp(float features[4][NB_TOTAL_FEATURES], const float *mem, int best_id) {
int id0, id1;
best_id += (best_id >= FORBIDDEN_INTERP);
id0 = best_id / 3;
id1 = best_id % 3;
single_interp(features[0], mem, features[1], id0);
single_interp(features[2], features[1], features[3], id1);
}
void perform_interp_relaxation(float features[4][NB_TOTAL_FEATURES], const float *mem) {
int id0, id1;