Reduce audio files by only retaining parts with human sppeech
- https://www.geeksforgeeks.org/python-speech-recognition-on-large-audio-files/
- https://www.kdnuggets.com/2020/02/audio-data-analysis-deep-learning-python-part-1.html
- https://realpython.com/python-speech-recognition/
- https://stackoverflow.com/questions/62609778/detecting-whether-an-audio-file-has-speech-in-python
- voice-recognition speech-recognition speech-to-text speaker-verification deepspeech speaker-identification google-speech-to-text