Abstract

Due to the increase in technology and the evolution of computers, speech recognition technology plays a vital role in our daily lives. Communicating with the computer through speech is more feasible than communicating through text. Speech recognition is the process of conversion of human speech to readable text to perform various operations. India has the most amazing diverse, multilingual community. Currently, there are 22 recognized languages with 12 scripts in the constitution. On the other hand, 1900+ dialects are divided into four language groups. This literature review aims to comprehensively analyse the automatic speech recognition system based on its history, types, application and problems in existing systems. Furthermore, the state-of-art speech recognition approaches are examined to lead a comparative study. As a result of an extensive literature review, future research directions are highlighted in terms of practical and relevant methods