Duplicated from Silentlin/DiffSinger
https://huggingface.co/spaces/justyoung/DiffSinger/resolve/main/modules/parallel_wavegan/utils/__init__.py
hf download hf://spaces/justyoung/DiffSinger/modules/parallel_wavegan/utils/__init__.py
curl -L -o __init__.py https://huggingface.co/spaces/justyoung/DiffSinger/resolve/main/modules/parallel_wavegan/utils/__init__.py
