eden-emu/opus
15
0
Fork 0
mirror of https://github.com/xiph/opus.git synced 2025-05-29 14:49:14 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Merge branch 'plc_challenge' into master

Browse source
This commit is contained in:
Jean-Marc Valin 2022-09-07 00:38:55 -04:00
commit 60450472a6
20 changed files with 1501 additions and 48 deletions

11
dnn/lpcnet.c
View file

@ -98,7 +98,6 @@ void run_frame_network(LPCNetState *lpcnet, float *gru_a_condition, float *gru_b
compute_conv1d(&feature_conv1, conv1_out, net->feature_conv1_state, in);
if (lpcnet->frame_count < FEATURE_CONV1_DELAY) RNN_CLEAR(conv1_out, FEATURE_CONV1_OUT_SIZE);
compute_conv1d(&feature_conv2, conv2_out, net->feature_conv2_state, conv1_out);
celt_assert(FRAME_INPUT_SIZE == FEATURE_CONV2_OUT_SIZE);
if (lpcnet->frame_count < FEATURES_DELAY) RNN_CLEAR(conv2_out, FEATURE_CONV2_OUT_SIZE);
_lpcnet_compute_dense(&feature_dense1, dense1_out, conv2_out);
_lpcnet_compute_dense(&feature_dense2, condition, dense1_out);
@ -196,8 +195,12 @@ void lpcnet_synthesize_tail_impl(LPCNetState *lpcnet, short *output, int N, int
last_sig_ulaw = lin2ulaw(lpcnet->last_sig[0]);
pred_ulaw = lin2ulaw(pred);
exc = run_sample_network(&lpcnet->nnet, lpcnet->gru_a_condition, lpcnet->gru_b_condition, lpcnet->last_exc, last_sig_ulaw, pred_ulaw, lpcnet->sampling_logit_table, &lpcnet->rng);
if (i < preload) exc = lin2ulaw(output[i]-PREEMPH*lpcnet->deemph_mem - pred);
pcm = pred + ulaw2lin(exc);
if (i < preload) {
exc = lin2ulaw(output[i]-PREEMPH*lpcnet->deemph_mem - pred);
pcm = output[i]-PREEMPH*lpcnet->deemph_mem;
} else {
pcm = pred + ulaw2lin(exc);
}
RNN_MOVE(&lpcnet->last_sig[1], &lpcnet->last_sig[0], LPC_ORDER-1);
lpcnet->last_sig[0] = pcm;
lpcnet->last_exc = exc;
@ -205,7 +208,7 @@ void lpcnet_synthesize_tail_impl(LPCNetState *lpcnet, short *output, int N, int
lpcnet->deemph_mem = pcm;
if (pcm<-32767) pcm = -32767;
if (pcm>32767) pcm = 32767;
output[i] = (int)floor(.5 + pcm);
if (i >= preload) output[i] = (int)floor(.5 + pcm);
}
}