Installation of pyaudio for voice recognition

Hi
Im working on voice recognition where im using the mic , so i need to install the pyaudio package .
when im using the pip install pyaudio on my evk board im getting error pointing at the portaudio.h.so please can i know where and how can i install the portaudio or place the portaudio.h file to install the pyaudio

The official docs have information about installing the prerequisites : https://people.csail.mit.edu/hubert/pyaudio/#downloads