Requirements. To use all of the functionality of the library, you should have: Python 2.6, 2.7, or 3.3+ (required); PyAudio 0.2.11+ (required only if you need to use microphone input, Microphone); PocketSphinx (required only if you need to use the Sphinx recognizer, recognizer_instance.recognize_sphinx); Google API Client Library for Python (required only if you need to use the Google Cloud ....