* [python_kaldi_features](https://github.com/ZitengWang/python_kaldi_features)  
commit: fc1bd6240c2008412ab64dc25045cd872f5e126c  
ref: https://zhuanlan.zhihu.com/p/55371926  
licence: MIT

* [python-pinyin](https://github.com/mozillazg/python-pinyin.git)
commit: 55e524aa1b7b8eec3d15c5306043c6cdd5938b03
licence: MIT

* [zhon](https://github.com/tsroten/zhon)
commit: 09bf543696277f71de502506984661a60d24494c
licence: MIT

* [pymmseg-cpp](https://github.com/pluskid/pymmseg-cpp.git)
commit: b76465045717fbb4f118c4fbdd24ce93bab10a6d
licence: MIT

* [chinese_text_normalization](https://github.com/speechio/chinese_text_normalization.git)
commit: 9e92c7bf2d6b5a7974305406d8e240045beac51c
licence: MIT

* [phkit](https://github.com/KuangDD/phkit.git)
commit: b2100293c1e36da531d7f30bd52c9b955a649522
licence: None

* [nnAudio](https://github.com/KinWaiCheuk/nnAudio.git)
licence: MIT