Python PyAudio安装：
Python3.7 无法安装pyaudio
pip install pyaudio
提示error: Microsoft Visual C++ 14.0 is required. Get it with “Microsoft Visual C++ Build Tools”: http://landinghub.visualstudio.com/visual-cpp-build-tools
到这个地址下载对应的whl https://www.lfd.uci.edu/~gohlke/pythonlibs/#pyaudio
PyAudio-0.2.11-cp37-cp37m-win_amd64.whl
cp37代表python版本号3.7，amd64代表64位
手工下载(约110KB)完成后安装: (需要administrator权限)
pip install PyAudio-0.2.11-cp37-cp37m-win_amd64.whl
