This section deals with using existing, powerful speech recognition tools that will aid us in adding a layer of verbal communication with the Arduino.
There are tons of speech recognition softwares that can be used for this project. Some are better than the others. The software we will be using for this project is called BitVoicer. Mind you, the software is not free, but it isn't very expensive. However, after using it, you will understand why this software was chosen. You will also need a good microphone for this project. Most laptops come with inbuilt microphones. You could also use your phone's earphones if they came with a microphone.
Go to http://www.bitsophia.com/BitVoicer.aspx and purchase the program. Download and install it. If the download is a bit slow, be patient and let it finish downloading. Then, run the program as an administrator.