First of all, you have to choose the Best Speech To Text Software for your work. Do not think that, you can use the software right after to convert your voices into text. You have to train the software to recognize your voice. We cannot say that, everyone can speak in a same way and with same pronunciation. The slang, pronunciation and usage of words will vary from one person to another person, so the software cannot straight away understand your voice. This is the reason why you are asked to train the software.