make sure all your libraries or packages are installed.
paste the python PyAudio-0.2.11-cp37-cp37m-win_amd64.whl file in your python folder.
use this command "python -m pip install PyAudio-0.2.11-cp37-cp37m-win_amd64.whl" in cmd to install pyaudio or use "pip install python -m pip install PyAudio-0.2.11-cp37-cp37m-win_amd64.whl".