This module will help to convert your voice (speech) into text using Speech Recognition Library. You can control the devices or you can perform the desired tasks by the word recognition

First Install the following libraries for running the Speech Recognition and Control Project:

sudo pip3 install SpeechRecognition sudo apt-get install espeak sudo apt-get install espeak python-espeak

Alternatively, you can use Deep Speech if you're interested in a different library for Raspberry Pi 4: https://github.com/touchgadget/DeepSpeech