shithub: opus

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Revert PLC state to use Burg in the causal overlap

--- a/dnn/lpcnet_plc.c

+++ b/dnn/lpcnet_plc.c

@@ -121,6 +121,7 @@

       float zeros[2*NB_BANDS+NB_FEATURES+1] = {0};

       RNN_COPY(zeros, plc_features, 2*NB_BANDS);

       zeros[2*NB_BANDS+NB_FEATURES] = 1;

+      st->plc_net = st->plc_copy;

       compute_plc_pred(&st->plc_net, st->features, zeros);

       if (st->enable_blending) {

         LPCNetState copy;

@@ -196,6 +197,7 @@

     st->pcm_fill -= update_count;

     st->skip_analysis++;

   }

+  st->plc_copy = st->plc_net;

   lpcnet_synthesize_tail_impl(&st->lpcnet, pcm, FRAME_SIZE-TRAINING_OFFSET, 0);

   compute_plc_pred(&st->plc_net, st->features, zeros);

   if (st->loss_count >= 10) st->features[0] = MAX16(-10, st->features[0]+att_table[9] - 2*(st->loss_count-9));

--- a/dnn/lpcnet_private.h

+++ b/dnn/lpcnet_private.h

@@ -78,6 +78,7 @@

   float features[NB_TOTAL_FEATURES];

   int loss_count;

   PLCNetState plc_net;

+  PLCNetState plc_copy;

   int enable_blending;

   int non_causal;

   double dc_mem;

-- 

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