Abstract: Speech has always been an important activity in human life and also contributing a lot to the society. The interaction between human and computer or maybe any computing device became a new trend and sometimes a need of an hour. Speech recognition system actually converts the analog spoken inputs to the digital signals that a computer can understand and do the required task or provide the user with the output. This paper gives a brief introduction to this lime lighted topic and explains few of its application, in our information world and also touch topic likes accuracy, and working of the speech recognition, with its future use. This paper will also include the models of speech recognition.

Keywords: recognition pattern, models, accuracy, spontaneous speech, noise.