Initialize excitation memory value to unquantized 0

dnn/lpcnet.c

@@ -101,7 +101,7 @@ LPCNET_EXPORT int lpcnet_get_size()
 LPCNET_EXPORT int lpcnet_init(LPCNetState *lpcnet)
 {
     memset(lpcnet, 0, lpcnet_get_size());
-    lpcnet->last_exc = 128;
+    lpcnet->last_exc = lin2ulaw(0.f);
     return 0;
 }
 

dnn/lpcnet_enc.c

@@ -468,6 +468,7 @@ LPCNET_EXPORT int lpcnet_encoder_get_size() {
 
 LPCNET_EXPORT int lpcnet_encoder_init(LPCNetEncState *st) {
   memset(st, 0, sizeof(*st));
+  st->exc_mem = lin2ulaw(0.f);
   return 0;
 }