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Refactoring frame rate network

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This commit is contained in:
Jean-Marc Valin 2021-08-16 15:20:19 -04:00
parent 66c29fb620
commit 9776e8e828
2 changed files with 40 additions and 38 deletions
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77
dnn/lpcnet.c
View file

@ -53,7 +53,32 @@ static void print_vector(float *x, int N)
}
#endif
void run_frame_network(LPCNetState *lpcnet, float *rc, float *gru_a_condition, float *gru_b_condition, const float *features, int pitch)
#ifdef END2END
void rc2lpc(float *lpc, const float *rc)
{
float tmp[LPC_ORDER];
float ntmp[LPC_ORDER] = {0.0};
RNN_COPY(tmp, rc, LPC_ORDER);
for(int i = 0; i < LPC_ORDER ; i++)
{
for(int j = 0; j <= i-1; j++)
{
ntmp[j] = tmp[j] + tmp[i]*tmp[i - j - 1];
}
for(int k = 0; k <= i-1; k++)
{
tmp[k] = ntmp[k];
}
}
for(int i = 0; i < LPC_ORDER ; i++)
{
lpc[i] = tmp[i];
}
}
#endif
void run_frame_network(LPCNetState *lpcnet, float *gru_a_condition, float *gru_b_condition, float *lpc, const float *features)
{
NNetState *net;
float condition[FEATURE_DENSE2_OUT_SIZE];
@ -61,6 +86,11 @@ void run_frame_network(LPCNetState *lpcnet, float *rc, float *gru_a_condition, f
float conv1_out[FEATURE_CONV1_OUT_SIZE];
float conv2_out[FEATURE_CONV2_OUT_SIZE];
float dense1_out[FEATURE_DENSE1_OUT_SIZE];
int pitch;
float rc[LPC_ORDER];
/* Matches the Python code -- the 0.1 avoids rounding issues. */
pitch = (int)floor(.1 + 50*features[18]+100);
pitch = IMIN(255, IMAX(33, pitch));
net = &lpcnet->nnet;
RNN_COPY(in, features, NB_FEATURES);
compute_embedding(&embed_pitch, &in[NB_FEATURES], pitch);
@ -74,6 +104,13 @@ void run_frame_network(LPCNetState *lpcnet, float *rc, float *gru_a_condition, f
RNN_COPY(rc, condition, LPC_ORDER);
compute_dense(&gru_a_dense_feature, gru_a_condition, condition);
compute_dense(&gru_b_dense_feature, gru_b_condition, condition);
#ifdef END2END
rc2lpc(lpc, rc);
#else
memcpy(lpc, lpcnet->old_lpc[FEATURES_DELAY-1], LPC_ORDER*sizeof(lpc[0]));
memmove(lpcnet->old_lpc[1], lpcnet->old_lpc[0], (FEATURES_DELAY-1)*LPC_ORDER*sizeof(lpc[0]));
lpc_from_cepstrum(lpcnet->old_lpc[0], features);
#endif
if (lpcnet->frame_count < 1000) lpcnet->frame_count++;
}
@ -129,50 +166,14 @@ LPCNET_EXPORT void lpcnet_destroy(LPCNetState *lpcnet)
free(lpcnet);
}
#ifdef END2END
void rc2lpc(float *lpc, const float *rc)
{
float tmp[LPC_ORDER];
float ntmp[LPC_ORDER] = {0.0};
RNN_COPY(tmp, rc, LPC_ORDER);
for(int i = 0; i < LPC_ORDER ; i++)
{
for(int j = 0; j <= i-1; j++)
{
ntmp[j] = tmp[j] + tmp[i]*tmp[i - j - 1];
}
for(int k = 0; k <= i-1; k++)
{
tmp[k] = ntmp[k];
}
}
for(int i = 0; i < LPC_ORDER ; i++)
{
lpc[i] = tmp[i];
}
}
#endif
LPCNET_EXPORT void lpcnet_synthesize(LPCNetState *lpcnet, const float *features, short *output, int N)
{
int i;
float lpc[LPC_ORDER];
float rc[LPC_ORDER];
float gru_a_condition[3*GRU_A_STATE_SIZE];
float gru_b_condition[3*GRU_B_STATE_SIZE];
int pitch;
/* Matches the Python code -- the 0.1 avoids rounding issues. */
pitch = (int)floor(.1 + 50*features[18]+100);
pitch = IMIN(255, IMAX(33, pitch));
run_frame_network(lpcnet, rc, gru_a_condition, gru_b_condition, features, pitch);
#ifdef END2END
rc2lpc(lpc, rc);
#else
memcpy(lpc, lpcnet->old_lpc[FEATURES_DELAY-1], LPC_ORDER*sizeof(lpc[0]));
memmove(lpcnet->old_lpc[1], lpcnet->old_lpc[0], (FEATURES_DELAY-1)*LPC_ORDER*sizeof(lpc[0]));
lpc_from_cepstrum(lpcnet->old_lpc[0], features);
#endif
run_frame_network(lpcnet, gru_a_condition, gru_b_condition, lpc, features);
if (lpcnet->frame_count <= FEATURES_DELAY)
{

1
dnn/lpcnet_private.h
View file

@ -74,4 +74,5 @@ void compute_frame_features(LPCNetEncState *st, const float *in);
void decode_packet(float features[4][NB_TOTAL_FEATURES], float *vq_mem, const unsigned char buf[8]);
void run_frame_network(LPCNetState *lpcnet, float *gru_a_condition, float *gru_b_condition, float *lpc, const float *features);
#endif