Could you please provide the installation guide for augmentation in Speech2text parts?

[iamweiweishi]

Hi,
I am trying to run the examples in 'speech-to-text'.
But the caching.ipynb needs the augmentation module.
It seems like this module is not installed by 'pip install augmentation', which does not include the 'change_pitch_speech', 'change_amplitude', ... methods.
so could you pls provide me some infos about the module?
Many thanks.

[huseinzol05]

Added augmentation.py, I forgot to add it last time, sorry.