shithub: opus

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Boosting pitch correlation at inference time

--- a/dnn/lpcnet_plc.c

+++ b/dnn/lpcnet_plc.c

@@ -81,6 +81,8 @@

   compute_gruB(&plc_gru1, zeros, net->plc_gru1_state, dense_out);

   compute_gruB(&plc_gru2, zeros, net->plc_gru2_state, net->plc_gru1_state);

   _lpcnet_compute_dense(&plc_out, out, net->plc_gru2_state);

+  /* Artificially boost the correlation to make harmonics cleaner. */

+  out[19] = MIN16(.5f, out[19]+.1f);

 }

 void clear_state(LPCNetPLCState *st) {

-- 

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