Recognition screensaver on a PC, in which the character responds to questions, e.g. "Where are you?" or statements, e.g. "Hello. "]] In computer science, speech recognition (SR) is the translation of spoken words into text. It is also known as "automatic speech recognition", "ASR", "computer speech recognition", "speech to text", or just "STT". Some SR systems use "training" where an individual speaker reads sections of text into the SR system.