An Art of Speech Recognition: A Review

Speech recognition is conversion of human speech in to the text or control signal by the means of intelligent algorithms. Speech recognition plays vital role in many biometric authentication systems and voice controlled automation systems. Speech recognition is challenging task due to variation in recording devices, speakers, contexts, and environment. Speech recognition consists of three major steps such as speech preprocessing, feature extraction, and speech classification. This paper provides literature review on the various feature extraction and classification methods used in speech recognition system.