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cleanup

--- a/dnn/dump_data.c

+++ b/dnn/dump_data.c

@@ -101,7 +101,6 @@

     OPUS_MOVE(&st->sig_mem[1], &st->sig_mem[0], LPC_ORDER-1);

     st->sig_mem[0] = p + ulaw2lin(e);

-    st->exc_mem = e;

   }

   fwrite(data, 4*FRAME_SIZE, 1, file);

 }

--- a/dnn/lpcnet_enc.c

+++ b/dnn/lpcnet_enc.c

@@ -50,7 +50,6 @@

 int lpcnet_encoder_init(LPCNetEncState *st) {

   memset(st, 0, sizeof(*st));

-  st->exc_mem = lin2ulaw(0.f);

   pitchdnn_init(&st->pitchdnn);

   return 0;

 }

--- a/dnn/lpcnet_plc.c

+++ b/dnn/lpcnet_plc.c

@@ -132,10 +132,6 @@

   OPUS_COPY(&st->cont_features[(CONT_VECTORS-1)*NB_FEATURES], features, NB_FEATURES);

 }

-static void replace_features(LPCNetPLCState *st, const float *features) {

-  OPUS_COPY(&st->cont_features[(CONT_VECTORS-1)*NB_FEATURES], features, NB_FEATURES);

-}

-

 /* In this causal version of the code, the DNN model implemented by compute_plc_pred()

    needs to generate two feature vectors to conceal the first lost packet.*/

--- a/dnn/lpcnet_private.h

+++ b/dnn/lpcnet_private.h

@@ -36,13 +36,9 @@

   float exc_buf[PITCH_BUF_SIZE];

   float lp_buf[PITCH_BUF_SIZE];

   float lp_mem[4];

-  float last_gain;

-  int last_period;

   float lpc[LPC_ORDER];

-  float vq_mem[NB_BANDS];

   float features[NB_TOTAL_FEATURES];

   float sig_mem[LPC_ORDER];

-  int exc_mem;

   float burg_cepstrum[2*NB_BANDS];

 };

-- 

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