A survey on automatic speech recognition system

Speech is a primary mode of communication among human beings. It is natural for people to expect to be able to carry out spoken dialogue with computers. In this paper we discussed the fundamental approach and development of speech recognition in the last several year of research in Automatic Speech Recognition (ASR). The design of Speech Recognition system requires careful attentions to the following issues: Various type of speech class, Feature Extraction, Acoustic model, Pronunciation Dictionary and language model. We presented the various techniques to solve this problem existing in ASR. This paper is helpful for to review the problem in ASR research in various Speech recognition models.