In my system, I've already installed pyaudio, but here the problem is with microphone functions

import speech_recognition as sr

r = sr.Recognizer()

mic = sr.Microphone()

Here, The problem is with the third line of the above code mic=sr.Microphone() . Ultimately, the terminal will give us this message

Please build and install the PortAudio Python bindings first.

Now, when I install "pip install PortAudio", the terminal says

Could not find a version that satisfies the requirement PortAudio (from versions: )No matching distribution found for PortAudio

So, I have pyaudio but I don't have PortAudio.Can anyone help me with this doubt?