A Review on Speech Recognition by Machines

Abstract

This paper discusses about the importance of speech recognition and also shows how the speech recognition evolved in these many years. This also shows the technological perspectives of the and progress in the important field of speech communication. These many years of research made the automatic speech recognition one of the challenging domains and made it an important research thing. The speech recognition at the time of invention or its early stage was not as effective as it is now, therefore many researchers worked on this domain and made it one of the exceptional aspects. This paper shows some of the important works or updates that was done by researchers to make this automated speech recognition (ASR) work as it is now. This paper discusses on how the speech recognition changed the way the world it is now with the help of mobile personal assistants and how the automatic speech recognition system works. In this paper we discussed briefly about the speech recognition techniques, feature extraction methods, types of speech of recognition. This paper also consists of the applications of speech recognition since its existence. This paper also shows the approaches of speech recognition and also shows the matching techniques like whole word match and sub word match. Literary survey shows the chronical order inventions and discoveries in the field of speech recognition. This paper gives the complete idea about speech recognition.