Merge branch 'exp_rdovae6'

dnn/Makefile.am

dnn/README.md

dnn/autogen.sh

dnn/common.c

dnn/common.h

dnn/download_model.bat

dnn/download_model.sh

dnn/dred_rdovae.c

dnn/dred_rdovae_dec.c

dnn/dred_rdovae_dec.h

dnn/dred_rdovae_enc.c

dnn/dred_rdovae_enc.h

dnn/dump_lpcnet_tables.c

dnn/freq.c

dnn/include/dred_rdovae.h

dnn/include/lpcnet.h

dnn/kiss_fft.c

dnn/kiss_fft.h

dnn/lpcnet.c

dnn/lpcnet_dec.c