python3 train.py  chkpt_dir --max_steps 1000000

python3 inference.py weights-chkpt.pt low_resolution_22k.wav -o "output.wav"

@misc{lee2021nuwave,
      title={NU-Wave: A Diffusion Probabilistic Model for Neural Audio Upsampling}, 
      author={Junhyeok Lee and Seungu Han},
      year={2021},
      eprint={2104.02321},
      archivePrefix={arXiv},
      primaryClass={eess.AS}
}